Les principaux domaines d’activité du Modelisation Group sont :
L’équipe de recherche s’intéresse à modéliser toute la chaîne de l’énergie, de la production à la consommation, en passant par la distribution et la supervision. Comprendre le fonctionnement physique précis des machines de production permet de rationaliser leur utilisation et les utiliser pour réaliser du stockage. Une partie numérique essentielle vient compléter le travail en proposant des modélisations des réseaux de distribution d’énergie et des systèmes de communication nécessaires à l’optimisation de l’ensemble.
S’appuyant sur tous les domaines de l’ingénierie, les matériaux et les structures innovants connaissent une croissance considérable. Cela implique le développement de nouvelles technologies, notamment celles de fabrication additive, et des matériaux intelligents. L’équipe de recherche participe à ce champ de recherche en mettant l’accent sur trois sujets : la modélisation multi-échelle des matériaux ; l’amélioration des procédés de fabrication additive et la caractérisation des performances des nouveaux matériaux.
La modélisation des fluides complexes concerne tous les fluides qui ne peuvent pas être décrits par les équations de Navier-Stokes. La plupart des problèmes étudiés sont en lien avec la dynamique des fluides complexes et des écoulements polyphasiques notamment les interactions fluide-particule. La recherche développée implique une collaboration interdisciplinaire entre plusieurs domaines scientifiques. Nous proposons une analyse mathématique et numérique de ces fluides ayant des applications industrielles.
L’équipe d’enseignants-chercheurs Modelisation Group
L’ensemble des travaux des enseignants-chercheurs Modelisation Group.
Walid Samah; Pascal Clain; François Rioual; Laurence Fournaison; Anthony Delahaye
Investigation of ice detachment by a liquid jet on various submerged surfaces for the development of ice slurry generators without mechanical scraping Article de journal
Dans: Applied Thermal Engineering, vol. 236, p. 121463, 2024.
@article{samah_2410,
title = {Investigation of ice detachment by a liquid jet on various submerged surfaces for the development of ice slurry generators without mechanical scraping},
author = {Walid Samah and Pascal Clain and François Rioual and Laurence Fournaison and Anthony Delahaye},
url = {https://www.sciencedirect.com/science/article/pii/S1359431123014928},
year = {2024},
date = {2024-01-01},
journal = {Applied Thermal Engineering},
volume = {236},
pages = {121463},
abstract = {Ice slurry is an alternative method to reduce the quantity and emission of greenhouse refrigerants, as well as control electrical energy consumption. However, the production of ice slurry requires the use of scraped-surface generators, which are costly to maintain and consume high mechanical energy. Therefore, studying the icephobic behavior of surfaces is of interest to significantly reduce ice adhesion and facilitate detachment without the need for mechanical scrapers. This study focuses on the growth, adhesion, and detachment phenomena of ice by liquid jets on different types of surfaces (hydrophilic, hydrophobic, and superhydrophobic) immersed in a 10 wt% ethanol/water mixture. A liquid jet is used to detach the ice layer from the surfaces, with a velocity ranging from 0 to 2.87 m s?1, and the surface temperature varies from 25 °C to approximately -9 °C. The results show that ice adheres less to hydrophilic and hydrophobic surfaces compared to superhydrophobic surfaces. The use of PTFE-treated aluminum surfaces (hydrophobic) reduces the required flow velocity to detach the ice layer by half compared to untreated aluminum surfaces (hydrophilic). An ANSYS® Fluent numerical model was developed to simulate the evolution of turbulent velocities of immersed liquid jets, and a semi-empirical model was designed to estimate the detachment forces of soft ice from hydrophilic surfaces (untreated aluminum). Two types of ice detachment from surfaces were identified: adhesive detachment and cohesive detachment.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Youssef Belhamadia; Jean Deteix; Basma Jaffal-Moutarda; Driss Yakoubi
Existence and uniqueness for a convective phase change model with temperature-dependent viscosity Article de journal
Dans: Journal Of Mathematical Analysis And Applications, vol. 527, no. 2, p. 127559, 2023.
@article{belhamadia_2366,
title = {Existence and uniqueness for a convective phase change model with temperature-dependent viscosity},
author = {Youssef Belhamadia and Jean Deteix and Basma Jaffal-Moutarda and Driss Yakoubi},
url = {https://www.sciencedirect.com/science/article/pii/S0022247X23005620?via%3Dihub},
year = {2023},
date = {2023-11-01},
journal = {Journal Of Mathematical Analysis And Applications},
volume = {527},
number = {2},
pages = {127559},
abstract = {In this article, we consider a class of phase change model with temperature-dependent viscosity, convection and mixed boundary conditions on a bounded domain that reflect melting and solidification in a variety of real-world applications, such as metal casting and crystal growth. The mathematical model, which is based on the enthalpy formulation, takes into consideration the thermophysical differences between the liquid and solid states. The moving liquid-solid interface is explicitly fulfilled as the energy and momentum equations are solved over the full physical domain. Under particular assumptions, we derive various a priori estimates and prove well-posedness results. Numerical simulation of the model employed in the
paper is presented as an illustration of an example of a melting problem.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Etienne Bernard; Francesco Salvarani
On the Homogenization of the Renewal Equation with Heterogeneous External Constraints Article de journal
Dans: Acta Applicandae Mathematicae, vol. 187, no. 1, p. 4, 2023.
@article{bernard_2401,
title = {On the Homogenization of the Renewal Equation with Heterogeneous External Constraints},
author = {Etienne Bernard and Francesco Salvarani},
url = {https://link.springer.com/article/10.1007/s10440-023-00594-2},
year = {2023},
date = {2023-10-01},
journal = {Acta Applicandae Mathematicae},
volume = {187},
number = {1},
pages = {4},
abstract = {We study the homogenization limit of the renewal equation with heterogeneous external con- straints by means of the two-scale convergence theory. We prove that the homogenized limit satisfies an equation involving non-local terms, which are the consequence of the oscillations in the birth and death terms. We have moreover shown that the numerical approximation of the homogenized equation via the two-scale limit gives an alternative way for the numerical study of the solution of the limiting problem.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Youcef Amirat; Kamel Hamdache
Homogenization of ferrofluid flow models in porous media with Langevin magnetization law Article de journal
Dans: Journal Of Mathematical Analysis And Applications, vol. 525, no. 1, p. 127129, 2023.
@article{amirat_2247,
title = {Homogenization of ferrofluid flow models in porous media with Langevin magnetization law},
author = {Youcef Amirat and Kamel Hamdache},
url = {https://www.sciencedirect.com/science/article/pii/S0022247X23001324?via%3Dihub},
year = {2023},
date = {2023-09-01},
journal = {Journal Of Mathematical Analysis And Applications},
volume = {525},
number = {1},
pages = {127129},
abstract = {The paper is concerned with the homogenization of the equations describing the flow of a ferrofluid through a heterogeneous porous medium ? in the presence of an applied magnetic field. We discuss two models where the magnetization M is parallel to the magnetic field H. In the first one M and H satisfy the relation M=?01?fH in ?, where ?0 is a positive constant and 1?f is the characteristic function of ?f (the pore space). In the second model, M and H satisfy the Langevin magnetization law M=MsL(b1|H|)|H|1?fH, where L is the Langevin function given by L(x)=1tanh?x?1x, Ms is the saturation magnetization and b1 is a positive physical constant. The velocity and the pressure satisfy the Stokes equation with a Kelvin magnetic force. We perform the homogenization of the equations of each of the two models. Using the two-scale convergence method, we rigorously derive the homogenized equation for the magnetic potential and determine the asymptotic limit of the magnetization. Then we rigorously derive a Darcy law.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
André Fortin; Driss Yakoubi
High accuracy breaking point detection for stiff DDEs Article de journal
Dans: Applied Mathematics Letters, vol. 143, p. 108665, 2023.
@article{fortin_2280,
title = {High accuracy breaking point detection for stiff DDEs},
author = {André Fortin and Driss Yakoubi},
url = {https://www.sciencedirect.com/science/article/abs/pii/S0893965923000976#d1e179},
year = {2023},
date = {2023-09-01},
journal = {Applied Mathematics Letters},
volume = {143},
pages = {108665},
abstract = {We have recently introduced a very high order Discontinuous Galerkin (DG) method for the solution of stiff ordinary differential equations (ODEs) and delay differential equations (DDEs). In this communication we focus on the detection of breaking points frequently arising in the solution of stiff DDEs. Breaking points are discontinuities appearing in the solution of DDEs and/or in some of its derivatives. Breaking points affect the efficiency of the numerical method by forcing very small time steps in their vicinity. They also locally affect the solution accuracy. We therefore introduce a very simple breaking point detection algorithm in order to further improve the efficiency our DG method.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Francesco Salvarani; Etienne Bernard
Homogenization of the linear Boltzmann equation with a highly oscillating scattering term in extended phase space Article de journal
Dans: Applied Mathematics Letters, vol. 143, p. 108672, 2023.
@article{salvarani_2286,
title = {Homogenization of the linear Boltzmann equation with a highly oscillating scattering term in extended phase space},
author = {Francesco Salvarani and Etienne Bernard},
url = {https://doi.org/10.1016/j.aml.2023.108672},
year = {2023},
date = {2023-09-01},
journal = {Applied Mathematics Letters},
volume = {143},
pages = {108672},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Juvert Njeck Sama; Alessandro Biancalani; Alberto Bottino; I Chavdarovski; Daniele Del Sarto; A Ghizzo; Thomas Hayward-Schneider; Philipp Lauber; B Rettino; Francesco Vannini
Effect of temperature anisotropy on the dynamics of geodesic acoustic modes Article de journal
Dans: Journal Of Plasma Physics, vol. 89, no. 1, p. 905890109, 2023.
@article{sama_2301,
title = {Effect of temperature anisotropy on the dynamics of geodesic acoustic modes},
author = {Juvert Njeck Sama and Alessandro Biancalani and Alberto Bottino and I Chavdarovski and Daniele Del Sarto and A Ghizzo and Thomas Hayward-Schneider and Philipp Lauber and B Rettino and Francesco Vannini},
url = {https://www.cambridge.org/core/journals/journal-of-plasma-physics/article/abs/effect-of-temperature-anisotropy-on-the-dynamics-of-geodesic-acoustic-modes/B3084D49F9505CDF3AA53221EE074E46},
year = {2023},
date = {2023-08-01},
journal = {Journal Of Plasma Physics},
volume = {89},
number = {1},
pages = {905890109},
abstract = {In this work, we revisit the linear gyro-kinetic theory of geodesic acoustic modes (GAMs) and derive a general dispersion relation for an arbitrary equilibrium distribution function of ions. A bi-Maxwellian distribution of ions is then used to study the effects of ion temperature anisotropy on GAM frequency and growth rate. We find that ion temperature anisotropy yields sensible modifications to both the GAM frequency and growth rate as both tend to increase with anisotropy and these results are strongly affected by the electron to ion temperature ratio.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Driss Yakoubi
Enhancing the viscosity-splitting method to solve the time-dependent Navier-Stokes equations Article de journal
Dans: Communications In Nonlinear Science And Numerical Simulation, vol. 123, p. 107264, 2023.
@article{yakoubi_2302,
title = {Enhancing the viscosity-splitting method to solve the time-dependent Navier-Stokes equations},
author = {Driss Yakoubi},
url = {https://www.sciencedirect.com/science/article/abs/pii/S100757042300182X},
year = {2023},
date = {2023-08-01},
journal = {Communications In Nonlinear Science And Numerical Simulation},
volume = {123},
pages = {107264},
abstract = {The viscosity-splitting (VS) scheme for solving the incompressible time-dependent Navier-Stokes equations consists to decouple the full problem into two easy subproblems to resolve.
This method splits the nonlinearity (convection term) and the incompressibility into two different steps. As a result, every subproblem is easier to solve than the Navier-Stokes system. The semi-implicit approach is mostly used in the first step for the nonlinearity term and the intermediate velocity is calculated by dropping the pressure gradient. We then resolve a linear Stokes problem in the next step.
We present a modified viscosity-splitting scheme (Incremental viscosity-splitting) (IVS) to improve this method. This scheme adds the gradient of the pressure (calculated at the previous time step) in the first step and modifies the Stokes equations in the second step to
predict a better value of the intermediate velocity. A manufactured solution and two well-known benchmarks will be used to demonstrate the effectiveness of the suggested strategy.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Frédérique Charles; Annamaria Massimini; Francesco Salvarani
Mathematical and numerical study of a kinetic model describing the evolution of planetary rings Article de journal
Dans: Computers & Mathematics With Applications, vol. 143, p. 48-56, 2023.
@article{charles_2316,
title = {Mathematical and numerical study of a kinetic model describing the evolution of planetary rings},
author = {Frédérique Charles and Annamaria Massimini and Francesco Salvarani},
url = {https://www.sciencedirect.com/science/article/pii/S0898122123001724},
year = {2023},
date = {2023-08-01},
journal = {Computers & Mathematics With Applications},
volume = {143},
pages = {48-56},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yasmine Salehy; Pascal Clain; Amokrane Boufares; Nada Chami; Jean-Philippe Torré; Didier Dalmazzone; Laurence Fournaison; Anthony Delahaye
Rheological properties of CO2 hydrate slurries in presence of Dioctyl sodium sulfosuccinate (AOT) in a dynamic loop for refrigeration application Article de journal
Dans: Chemical Engineering Science, vol. 275, p. 118716, 2023.
@article{salehy_2291,
title = {Rheological properties of CO2 hydrate slurries in presence of Dioctyl sodium sulfosuccinate (AOT) in a dynamic loop for refrigeration application},
author = {Yasmine Salehy and Pascal Clain and Amokrane Boufares and Nada Chami and Jean-Philippe Torré and Didier Dalmazzone and Laurence Fournaison and Anthony Delahaye},
url = {https://www.sciencedirect.com/science/article/pii/S0009250923002725?via%3Dihub},
year = {2023},
date = {2023-07-01},
journal = {Chemical Engineering Science},
volume = {275},
pages = {118716},
abstract = {Recent studies have shown real potential for using hydrate slurries as a secondary fluid in indirect refrigeration systems. However, pipeline clogging problems can appear due to hydrate agglomeration. Additives are generally used to counteract these problems. In this study, rheological properties of CO2 hydrate slurries in the presence of an additive Dioctyl sodium sulfosuccinate (AOT) are investigated. The capillary viscometer method is used to determine the fluid behaviour and the AOT impact on the slurry rheology. A dynamic loop is set up to collect experimental pressure drop and volume flow rate data. Based on the Rabinowitch and Mooney approach and Herschel-Bulkley model to determine the rheological properties, a shear-thinning behaviour was observed. The importance of the behaviour index choice in the procedure is discussed. Finally, the results obtained with AOT are compared with pre-existing studies. The present study highlights the AOT potential to significantly improve the CO2 hydrate slurries properties.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mohammadali Shirinbayani; Abbasnezhad Navideh; Mohammad Hossein Nikooharf; Khaled Benfriha; Achraf Kallel; Jendli Zouhaier; Joseph Fitoussi
Manufacturing Process Effect on the Mechanical Properties of Glass Fiber/Polypropylene Composite Under High Strain Rate Loading: Woven (W?GF?PP) and Compressed GF50?PP Article de journal
Dans: Applied Composite Materials, 2023.
@article{shirinbayani_2367,
title = {Manufacturing Process Effect on the Mechanical Properties of Glass Fiber/Polypropylene Composite Under High Strain Rate Loading: Woven (W?GF?PP) and Compressed GF50?PP},
author = {Mohammadali Shirinbayani and Abbasnezhad Navideh and Mohammad Hossein Nikooharf and Khaled Benfriha and Achraf Kallel and Jendli Zouhaier and Joseph Fitoussi},
url = {https://link.springer.com/article/10.1007/s10443-023-10143-7},
year = {2023},
date = {2023-07-01},
journal = {Applied Composite Materials},
abstract = {Long glass fiber thermoplastic laminates have garnered significant attention for their potential use in designing structural parts across various sectors, including automotive, aerospace, and petroleum. The growing demand for lightweight and reliable materials in hydrogen vessel reservoirs, intended for future vehicles, necessitates understanding the fast dynamic behavior (crash) of these materials for effective structural design in such applications.
This study presents an optimized approach for experimentally characterizing the overall dynamic mechanical behavior of Twill woven glass fiber reinforced polypropylene (W-GF-PP) laminates. The methodology focuses on reporting the strain rate effect on the
material response while attempting to isolate the inherent inertial disturbances in the specimen attributed to the test system. Tensile tests have been conducted until the specimen's total failure for three specific relative orientations of fiber: 0°, 90°, and ± 45°. The tests
span a strain rate range from quasi-static (10-4 s?1) up to 2000 mm?s?1 (approximately 160 s?1, depending on the specimen's actual response). The material's behavior appears sensitive, particularly for the ± 45° fiber orientation. The study also examines the impact of
the manufacturing process type on the dynamic behavior of the reinforced polypropylene.},
keywords = {},
pubstate = {online},
tppubtype = {article}
}
Raafat Talhouk; Luc Molinet; Ibtissame Zaiter
On well-posedness for some Korteweg-de Vries type equations with variable coefficients Article de journal
Dans: Journal Of Evolution Equations, vol. 23, no. 3, p. 52, 2023.
@article{talhouk_2369,
title = {On well-posedness for some Korteweg-de Vries type equations with variable coefficients},
author = {Raafat Talhouk and Luc Molinet and Ibtissame Zaiter},
url = {https://doi.org/10.1007/s00028-023-00904-z},
year = {2023},
date = {2023-07-01},
journal = {Journal Of Evolution Equations},
volume = {23},
number = {3},
pages = {52},
abstract = {In this paper, KdV-type equations with time- and space-dependent coefficients are considered. Assuming that the dispersion coefficient in front of uxxx is positive and uniformly bounded away from zero and that a primitive function of the ratio between the anti-dissipation and the dispersion coefficients is bounded from below, we prove the existence and uniqueness of a solution u such that hu belongs to a classical Sobolev space, where h is a function related to this ratio. The LWP in Hs(R), s > 1/2, in the classical (Hadamard) sense is also proven under this time an assumption of boundedness of the above primitive function. Our approach combines a change of unknown with dispersive estimates. Note that previous results were restricted to Hs(R), s > 3/2, and only used the dispersion to compensate the anti-dissipation and not to lower the Sobolev index required for well-posedness.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Aymen Khadimallah; Johann Petit; Naila Hfaiedh; Amna Znaidi
Characterization of fatigue behavior of AA2024-T351 aluminum alloy Article de journal
Dans: Fatigue & Fracture Of Engineering Materials & Structures, 2023.
@article{khadimallah_2380,
title = {Characterization of fatigue behavior of AA2024-T351 aluminum alloy},
author = {Aymen Khadimallah and Johann Petit and Naila Hfaiedh and Amna Znaidi},
url = {https://onlinelibrary.wiley.com/share/author/5HS4PJKGQVKNQNGDT9QT?target=10.1111/ffe.14102},
year = {2023},
date = {2023-07-01},
journal = {Fatigue & Fracture Of Engineering Materials & Structures},
abstract = {The paper aims to investigate the fatigue behavior of the widely used
AA2024-T351 aluminum alloy in the aircraft industry. An experimental program
was conducted to study the fatigue life and damage behavior under symmetrical
tensile-compressive loading. Cyclic tests in the low cycle fatigue
regime were performed under fully reversed total strain amplitudes from 0.6%
to 1.2%. The AA2024-T351 alloy exhibited cyclic hardening until failure. Symmetric
high cycle fatigue tests were also performed and the parameters for
fatigue life estimation using the Manson-Coffin-Basquin model were identified.
Elasto-plastic behavior was analyzed through stress-strain hysteresis
loops, evaluating kinematic and isotropic hardenings. Kinematic hardening
was found to be strain amplitude dependent, unlike the isotropic hardening.
The evolution of the isotropic variable with the percentage of fatigue life could
be described by an exponential law. Fractography investigations showed crack
initiation at the specimen border with quasi-cleavage and then crack propagating
by striation before ductile fracture.},
keywords = {},
pubstate = {online},
tppubtype = {article}
}
Yasmina Daikh; Sarra Maarouf; Driss Yakoubi; Chaima Bousbia
Augmented spectral formulation for the Stokes problem with variable viscosity and mixed boundary conditions Article de journal
Dans: Calcolo, vol. 60, no. 3, p. 2-23, 2023.
@article{daikh_2353,
title = {Augmented spectral formulation for the Stokes problem with variable viscosity and mixed boundary conditions},
author = {Yasmina Daikh and Sarra Maarouf and Driss Yakoubi and Chaima Bousbia},
url = {https://link.springer.com/article/10.1007/s10092-023-00530-8},
year = {2023},
date = {2023-06-01},
journal = {Calcolo},
volume = {60},
number = {3},
pages = {2-23},
abstract = {This paper deals with the analysis of a new augmented formulation in terms of vorticity, velocity and pressure for the Stokes equations with variable viscosity and mixed boundary conditions. The well-posedness of the continuous problem holds under assumptions on the viscosity. When the domain is a parallelepiped, the spectral discretization is proposed using the Galerkin method with numerical integration. Then, we prove the well-posedness of the obtained discrete problem under the same type of conditions on the viscosity. A priori error estimates is then derived for the three
unknowns. Finally, numerical experiments are presented that confirm the interest of
the discretization.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kamel Hamdache; Djamila Hamroun
The Bloch-Torrey limit of a kinetic transport system Article de journal
Dans: Mediterranean Journal Of Mathematics, vol. 20, no. 3, p. 122, 2023.
@article{hamdache_2246,
title = {The Bloch-Torrey limit of a kinetic transport system},
author = {Kamel Hamdache and Djamila Hamroun},
url = {https://link.springer.com/article/10.1007/s00009-023-02328-y#citeas},
year = {2023},
date = {2023-06-01},
journal = {Mediterranean Journal Of Mathematics},
volume = {20},
number = {3},
pages = {122},
abstract = {This work is devoted to highlighting the diffusion of some models of Kinetic-Bloch system by an asymptotic analysis. The limit of the kinetic equation when using the classical diffusion scaling shows that the magnetization field becomes parallel to the magnetic field. For the limit of the magnetization when we use a second scaling of the kinetic equation, we show that the dynamics of the magnetization is driven by the Bloch-Torrey diffusion equation.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Chaima Bousbia; Yasmina Daikh; Sarra Maarouf; Driss Yakoubi
Augmented spectral formulation for the Stokes problem with variable viscosity and mixed boundary conditions Article de journal
Dans: Calcolo, vol. 60, no. 3, p. 36, 2023.
@article{bousbia_2353,
title = {Augmented spectral formulation for the Stokes problem with variable viscosity and mixed boundary conditions},
author = {Chaima Bousbia and Yasmina Daikh and Sarra Maarouf and Driss Yakoubi},
url = {https://link.springer.com/article/10.1007/s10092-023-00530-8},
year = {2023},
date = {2023-06-01},
journal = {Calcolo},
volume = {60},
number = {3},
pages = {36},
abstract = {This paper deals with the analysis of a new augmented formulation in terms of vorticity, velocity and pressure for the Stokes equations with variable viscosity and mixed boundary conditions. The well-posedness of the continuous problem holds under assumptions on the viscosity. When the domain is a parallelepiped, the spectral discretization is proposed using the Galerkin method with numerical integration. Then, we prove the well-posedness of the obtained discrete problem under the same type of conditions on the viscosity. A priori error estimates is then derived for the three
unknowns. Finally, numerical experiments are presented that confirm the interest of
the discretization.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Fakhrielddine Bader; Mostafa Bendahmane; Mazen Saad; Raafat Talhouk
Dans: Asymptotic Analysis, vol. 132, no. 3-4, p. 575-606, 2023.
@article{bader_1995,
title = {Microscopic tridomain model of electrical activity in the heart with dynamical gap junctions. Part 2 - Derivation of the macroscopic tridomain model by unfolding homogenization method},
author = {Fakhrielddine Bader and Mostafa Bendahmane and Mazen Saad and Raafat Talhouk},
url = {https://doi.org/10.3233/ASY-221804},
year = {2023},
date = {2023-05-01},
journal = {Asymptotic Analysis},
volume = {132},
number = {3-4},
pages = {575-606},
abstract = {We study the homogenization of a novel microscopic tridomain system, allowing
for a more detailed analysis of the properties of cardiac conduction than the classical bidomain
and monodomain models. In [5], we detail this model in which gap junctions are considered
as the connections between adjacent cells in cardiac muscle and could serve as alternative
or supporting pathways for cell-to-cell electrical signal propagation. Departing from this mi-
croscopic cellular model, we apply the periodic unfolding method to derive the macroscopic
tridomain model. Several diculties prevent the application of unfolding homogenization
results, including the degenerate temporal structure of the tridomain equations and a nonlin-
ear dynamic boundary condition on the cellular membrane. To prove the convergence of the
nonlinear terms, especially those dened on the microscopic interface, we use the boundary
unfolding operator and a Kolmogorov-Riesz compactness's result.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
André Fortin; Driss Yakoubi
A very high order discontinuous Galerkin method for the numerical solution of stiff DDEs Article de journal
Dans: Applied Mathematics And Computation, vol. 443, p. 127767, 2023.
@article{fortin_2076,
title = {A very high order discontinuous Galerkin method for the numerical solution of stiff DDEs},
author = {André Fortin and Driss Yakoubi},
url = {https://www.sciencedirect.com/science/article/pii/S0096300322008359},
year = {2023},
date = {2023-04-01},
journal = {Applied Mathematics And Computation},
volume = {443},
pages = {127767},
abstract = {We present a high order discontinuous Galerkin (DG) method for the numerical solution of systems of delay differential equations (DDEs). The method is based on Legendre orthogonal polynomials of high degree k (typically k=10) in each subinterval and is a generalisation to DDEs of a similar method which proved to be very efficient for ordinary differential equations (ODEs). We show how the error can be estimated allowing to control the size of the time step. We also propose a particularly efficient quasi Newton method for the solution of the resulting non linear systems based on a very accurate approximation of the Jacobian matrix that is very easy to implement and with excellent convergence properties. The method is then applied to very stiff systems of DDEs.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Oussama Boussoufa; Yasmina Daikh; Driss Yakoubi
Numerical analysis for backward Euler spectral discretization for Stokes equations with boundary conditions involving the pressure: part I Article de journal
Dans: Calcolo, vol. 60, no. 2, p. 1–27, 2023.
@article{boussoufa_2305,
title = {Numerical analysis for backward Euler spectral discretization for Stokes equations with boundary conditions involving the pressure: part I},
author = {Oussama Boussoufa and Yasmina Daikh and Driss Yakoubi},
url = {https://link.springer.com/article/10.1007/s10092-023-00520-w},
year = {2023},
date = {2023-04-01},
journal = {Calcolo},
volume = {60},
number = {2},
pages = {1--27},
abstract = {In this paper, we address the study of the time-dependent Stokes system with boundary conditions involving the pressure. We obtain existence and uniqueness for a classof Lipschitz-continuous domains. Next, a spectral discretizations of the problem is
proposed combined with the backward Euler scheme. The discrete spaces are defined in a way to give exactly divergence-free discrete approximations for the velocity. Then, we prove the associated discrete inf-sup condition and derive a priori error estimates.
Finally, some numerical experiments are presented},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Laura Schittecatte; Valérie Geertsen; Daniel Bonamy; Thuy Nguyen; Patrick Guenoun
From resin formulation and process parameters to the final mechanical properties of 3D printed acrylate materials Article de journal
Dans: Mrs Communications, vol. 13, p. 357-377, 2023.
@article{schittecatte_2327,
title = {From resin formulation and process parameters to the final mechanical properties of 3D printed acrylate materials},
author = {Laura Schittecatte and Valérie Geertsen and Daniel Bonamy and Thuy Nguyen and Patrick Guenoun},
url = {https://link.springer.com/article/10.1557/s43579-023-00352-3},
year = {2023},
date = {2023-04-01},
journal = {Mrs Communications},
volume = {13},
pages = {357-377},
abstract = {Photopolymerizable resins are increasingly used to generate complex 3D printed parts through stereo lithography, digital light processing (DLP) and
liquid crystal display (LCD) 3D printing. Many challenges relating to the resin chemistry and printing parameters still exist and must be addressed in order to entirely control the properties of parts after printing. This work reviews the current knowledge and describes the potential of DLP/LCD methods for printed acrylate resins, as well as the steps necessary to achieve a better control over the mechanical properties of printed materials.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Alexey Mishchenko; Alessandro Biancalani; Juvert Njeck Sama; Alberto Bottino; Sergio Briguglio; M Borchardt; Emanuele Poli; Remi Dumont; Jorge Ferreira; J P Graves; Ralf Kleiber; B Rettino; Thomas Hayward-Schneider; Axel Koenies; Emmanuel Lanti; Philipp Lauber; H Leyh; Zhixin Lu; Hinrich Luetjens; Ben McMillan; Martin Campos Pinto; Baruch Rofman; Christoph Slaby; Francesco Vannini; Laurent Villard; Gregorio Vlad; Xin Wang; Fabien Widmer; Fulvio Zonca
Numerical tools for burning plasmas Article de journal
Dans: Plasma Physics And Controlled Fusion, vol. 65, no. 6, p. 064001, 2023.
@article{mishchenko_2378,
title = {Numerical tools for burning plasmas},
author = {Alexey Mishchenko and Alessandro Biancalani and Juvert Njeck Sama and Alberto Bottino and Sergio Briguglio and M Borchardt and Emanuele Poli and Remi Dumont and Jorge Ferreira and J P Graves and Ralf Kleiber and B Rettino and Thomas Hayward-Schneider and Axel Koenies and Emmanuel Lanti and Philipp Lauber and H Leyh and Zhixin Lu and Hinrich Luetjens and Ben McMillan and Martin Campos Pinto and Baruch Rofman and Christoph Slaby and Francesco Vannini and Laurent Villard and Gregorio Vlad and Xin Wang and Fabien Widmer and Fulvio Zonca},
url = {https://iopscience.iop.org/article/10.1088/1361-6587/acce68},
year = {2023},
date = {2023-04-01},
journal = {Plasma Physics And Controlled Fusion},
volume = {65},
number = {6},
pages = {064001},
abstract = {The software stack under development within a European coordinated effort on tools for burning plasma modelling is presented. The project is organised as a Task (TSVV Task 10) under the new E-TASC initiative (Litaudon et al 2022 Plasma Phys. Control. Fusion64 034005). This is a continued effort within the EUROfusion inheriting from the earlier European coordination projects as well as research projects based at various European laboratories. The ongoing work of the TSVV Tasks is supported by the Advanced Computing Hubs. Major projects requiring the high performance computing (HPC) resources are global gyrokinetic codes and global hybrid particle-magnetohydrodynamics (MHD) codes. Also applications using the integrated modelling tools, such as the Energetic-Particle Workflow, based on the ITER Integrated Modelling & Analysis Suite (IMAS), or the code package for modelling radio-frequency heating and fast-ion generation may require intensive computation and a substantial memory footprint. The continual development of these codes both on the physics side and on the HPC side allows us to tackle frontier problems, such as the interaction of turbulence with MHD-type modes in the presence of fast particles. One of the important mandated outcomes of the E-TASC project is the IMAS-enabling of EUROfusion codes and release of the software stack to the EUROfusion community.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Alessandro Biancalani; Alberto Bottino; I Chavdarovski; A Ghizzo; Thomas Hayward-Schneider; Philipp Lauber; B Rettino; Francesco Vannini
Effect of temperature anisotropy on the dynamics of geodesic acoustic modes Article de journal
Dans: Journal Of Plasma Physics, vol. 89, no. 1, p. 905890109, 2023.
@article{biancalani_2301,
title = {Effect of temperature anisotropy on the dynamics of geodesic acoustic modes},
author = {Alessandro Biancalani and Alberto Bottino and I Chavdarovski and A Ghizzo and Thomas Hayward-Schneider and Philipp Lauber and B Rettino and Francesco Vannini},
url = {https://www.cambridge.org/core/article/effect-of-temperature-anisotropy-on-the-dynamics-of-geodesic-acoustic-modes/B3084D49F9505CDF3AA53221EE074E46},
year = {2023},
date = {2023-03-01},
journal = {Journal Of Plasma Physics},
volume = {89},
number = {1},
pages = {905890109},
abstract = {In this work, we revisit the linear gyro-kinetic theory of geodesic acoustic modes (GAMs) and derive a general dispersion relation for an arbitrary equilibrium distribution function of ions. A bi-Maxwellian distribution of ions is then used to study the effects of ion temperature anisotropy on GAM frequency and growth rate. We find that ion temperature anisotropy yields sensible modifications to both the GAM frequency and growth rate as both tend to increase with anisotropy and these results are strongly affected by the electron to ion temperature ratio.},
keywords = {},
pubstate = {accepted},
tppubtype = {article}
}
Walid Samah; Pascal Clain; François Rioual; Laurence Fournaison; Anthony Delahaye
Review on ice crystallization and adhesion to optimize ice slurry generators without moving components Article de journal
Dans: Applied Thermal Engineering, vol. 223, p. 119974, 2023.
@article{samah_2080,
title = {Review on ice crystallization and adhesion to optimize ice slurry generators without moving components},
author = {Walid Samah and Pascal Clain and François Rioual and Laurence Fournaison and Anthony Delahaye},
url = {https://www-sciencedirect-com.devinci.idm.oclc.org/science/article/pii/S1359431123000030},
year = {2023},
date = {2023-03-01},
journal = {Applied Thermal Engineering},
volume = {223},
pages = {119974},
abstract = {The current climate crisis requires a radical reduction in energy consumption and greenhouse gas emissions. For the refrigeration industry, secondary refrigeration is one of the most accessible solutions to reduce the use of refrigerants with high greenhouse gas content. In addition, the use of low environmental impact two-phase secondary fluids, namely PCM (phase change material) slurries, such as ice slurries and gas hydrate slurries, can limit the electrical energy consumption involved in the process. Currently, the industry's most commonly used ice slurry production systems are scraped surface and supercooling generators. These have some disadvantages, such as maintenance costs and energy consumption. An ice slurry generator is considered efficient if it meets three criteria: continuous production, low energy consumption and reliable operation. Optimizing ice slurry production with generators without moving components (scraped surface) could be a solution to meet these criteria. The objective of this review is to present a critical analysis of ice slurry production optimization methods proposed in the literature. These methods aim either to prevent ice nucleation to produce supercooled water with a high supercooling degree, or to reduce the adhesion of the ice to the generator walls to facilitate its removal by flow or by external forces (gravity and buoyancy).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Swaminath Venkateswaran; Damien Charles Chablat
Mapping the Tilt & Torsion angles for a 3-SPS-U parallel mechanism Article de journal
Dans: Robotics, vol. 12, no. 2, p. 50, 2023.
@article{venkateswaran_2256,
title = {Mapping the Tilt & Torsion angles for a 3-SPS-U parallel mechanism},
author = {Swaminath Venkateswaran and Damien Charles Chablat},
url = {https://www.mdpi.com/2218-6581/12/2/50},
year = {2023},
date = {2023-03-01},
journal = {Robotics},
volume = {12},
number = {2},
pages = {50},
abstract = {This article presents the analysis of a parallel mechanism of type 3-SPS-U. The usual singularity approach is carried out with respect to the Euler angles of the universal joint. However, this approach is computationally expensive especially when stacked structures are analyzed. Thus, the positioning of the mobile platform for the mechanism is analyzed using the theory of Tilt & Torsion (T&T). The singularity-free workspace and the tilt limits of the mechanism are disclosed through this method. These workspaces can then be mapped to the Euler angles of the universal joint and the relation between the T & T space and the Euler space is demonstrated and validated in this study. Initially, simulations are performed using the results of singularity analysis to have a comparison between the T&T space and the Euler space. Experimental validation is then carried out on the prototype of the mechanism to perform a circular trajectory, in line with the simulations. The outcome of this study will be helpful for the integration of the mechanism for a piping inspection robot and also for the analysis of stacked architectures.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Thomas Borsoni; Laurent Boudin; Francesco Salvarani
Compactness property of the linearized Boltzmann operator for a polyatomic gas undergoing resonant collisions Article de journal
Dans: Journal Of Mathematical Analysis And Applications, vol. 517, no. 1, p. 126579, 2023.
@article{borsoni_1875,
title = {Compactness property of the linearized Boltzmann operator for a polyatomic gas undergoing resonant collisions},
author = {Thomas Borsoni and Laurent Boudin and Francesco Salvarani},
url = {https://www.sciencedirect.com/science/article/pii/S0022247X22005935?via%3Dihub},
year = {2023},
date = {2023-01-01},
journal = {Journal Of Mathematical Analysis And Applications},
volume = {517},
number = {1},
pages = {126579},
abstract = {In this paper, we investigate a compactness property of the linearized Boltzmann operator in the context of a polyatomic gas whose molecules undergo resonant collisions. The peculiar structure of resonant collision rules allows to tensorize the problem into a velocity-related one, neighbouring the monatomic case, and an internal energy-related one. Our analysis is based on a specific treatment of the internal energy contributions. We also propose a geometric variant of Grad's proof of the same compactness property in the monatomic case.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nada Chami; Yasmine Salehy; Dennis Burgner; Pascal Clain; Didier Dalmazzone; Anthony Delahaye; Laurence Fournaison
Rheological study of mixed cyclopentane + CO2 hydrate slurry in a dynamic loop for refrigeration systems Article de journal
Dans: Energy, vol. 263, p. 125661, 2023.
@article{chami_1961,
title = {Rheological study of mixed cyclopentane + CO2 hydrate slurry in a dynamic loop for refrigeration systems},
author = {Nada Chami and Yasmine Salehy and Dennis Burgner and Pascal Clain and Didier Dalmazzone and Anthony Delahaye and Laurence Fournaison},
url = {https://www.sciencedirect.com/science/article/pii/S0360544222025476},
year = {2023},
date = {2023-01-01},
journal = {Energy},
volume = {263},
pages = {125661},
abstract = {The use of CO2 hydrates as phase change materials is promising for secondary loop refrigeration, as these compounds present adjustable dissociation temperature that can be higher than 273.15 K and have high enthalpy of dissociation. In the present work, by using various promoters, cyclopentane (CP) in this study, the formation pressure of hydrates may be significantly lowered than CO2 hydrates. For their application as a secondary refrigerant, the rheological properties of mixed CP + CO2 hydrate slurry need to be controlled. The flow properties of CP and mixed CP + CO2 hydrate slurries were studied in a dynamic flow loop at different cyclopentane contents ranging from 3 wt% to 15 wt%, using a capillary viscometer based on Rabinowitch and Mooney equation. Rheological parameters (viscosity, flow behavior...) related to these two slurries were compared. The experimental results demonstrate that CP and mixed CP + CO2 hydrates slurries exhibit a shear thinning behavior and the viscosity values vary between 3 and 12 mPa.s-1 at [100-1000 s?1] for CP hydrates slurries and between 2 and 10 mPa s?1 at [100-1200 s?1] for CP + CO2 hydrates slurries. CP hydrate and CP + CO2 hydrate slurry viscosity is close to that of TBPB hydrate and lower than that of CO2 hydrate. Moreover, mixed CP + CO2 have shown a time-evolution of the rheological behavior.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Walid Samah; Pascal Clain; François Rioual; Laurence Fournaison; Anthony Delahaye
Experimental investigation on the wetting behavior of a superhydrophobic surface under controlled temperature and humidity Article de journal
Dans: Colloids And Surfaces A-Physicochemical And Engineering Aspects, vol. 656, p. 130451, 2023.
@article{samah_2025,
title = {Experimental investigation on the wetting behavior of a superhydrophobic surface under controlled temperature and humidity},
author = {Walid Samah and Pascal Clain and François Rioual and Laurence Fournaison and Anthony Delahaye},
url = {https://www.sciencedirect.com/science/article/pii/S0927775722022063},
year = {2023},
date = {2023-01-01},
journal = {Colloids And Surfaces A-Physicochemical And Engineering Aspects},
volume = {656},
pages = {130451},
abstract = {Superhydrophobic surfaces (SHS) are of great interest in various industrial fields. However, the application of these surfaces in cold, humid and submerged environments (as in the case of ice slurry production) sometimes presents problems related to the loss of their superhydrophobic properties. This paper presents an experimental study in order to characterize the wetting behavior of a surface coated with a commercial superhydrophobic "Ultra Ever Dry" (UED) coating at different surface temperatures (from 22 °C to ? 13 °C) and relative humidity (13%, 20%, 30%, 40% and 50%). Three methods are developed to characterize the wetting behavior. The first method consists in depositing a water drop on the cooled superhydrophobic UED surface. The objective is to characterize the static wetting behavior (evolution of contact angles) during the cooling of the surface for different relative humidity. The second method consists in dropping a water drop on the cooled UED superhydrophobic surface with an impact velocity of 1 m s?1. This method allows the dynamic behavior of the wetting (impact and rebound of the drop) to be characterized at different temperatures. The third method, consists in studying the effect of the immersion of the SHS in a volume of water cooled until supercooling then freezing. The aim is to analyze the wetting behavior in immersion at low temperature. The results of the static wetting study show that the superhydrophobic coating loses its non-wetting properties at temperatures below 13 °C for a relative humidity between 13% and 50% due to condensation on the surface. The results of the dynamic wetting study show that the superhydrophobic coating has poor resistance to water drop impact at surface temperatures below 4 °C. The wetting transition from Cassie to Wenzel state in low temperature immersion is caused by ice formation. The wettability state influences the morphology of the ice produced after freezing.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Francesco Salvarani
Kinetic models for complex systems Conférence
Modelling, analysis and numerical methods of complex dynamics, Marseille, France, 2023.
@conference{salvarani_2358,
title = {Kinetic models for complex systems},
author = {Francesco Salvarani},
url = {https://conferences.cirm-math.fr/3036.html},
year = {2023},
date = {2023-06-01},
booktitle = {Modelling, analysis and numerical methods of complex dynamics},
address = {Marseille, France},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Francesco Salvarani
On the homogenization of the linear Boltzmann equation Conférence
Seminario EDP, Universidad Autónoma de Madrid, Spain, 2023.
@conference{salvarani_2287,
title = {On the homogenization of the linear Boltzmann equation},
author = {Francesco Salvarani},
url = {https://sites.google.com/view/seminarioedpsuam-icmat/home},
year = {2023},
date = {2023-05-01},
booktitle = {Seminario EDP},
address = {Universidad Autónoma de Madrid, Spain},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Francesco Salvarani
Homogenization of linear kinetic equations with highly oscillating scattering terms Conférence
Seminario de Análisis Matemático y Matemática Aplicada, Madrid, Spain, 2023.
@conference{salvarani_2315,
title = {Homogenization of linear kinetic equations with highly oscillating scattering terms},
author = {Francesco Salvarani},
url = {https://www.ucm.es/imi//file/francesco-salvarani?ver},
year = {2023},
date = {2023-05-01},
booktitle = {Seminario de Análisis Matemático y Matemática Aplicada},
address = {Madrid, Spain},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Guillaume Guérard; Sofiane Ben Amor; Maxence Choufa; Sonia Djebali; Clement Cornet; Loup-Noé Levy; Hai Tran
Pretopology-based Clustering for Mixed Data Conférence
ROADEF 2023, Rennes , France, 2023.
@conference{guerard_2244,
title = {Pretopology-based Clustering for Mixed Data},
author = {Guillaume Guérard and Sofiane Ben Amor and Maxence Choufa and Sonia Djebali and Clement Cornet and Loup-Noé Levy and Hai Tran},
url = {https://roadef2023.sciencesconf.org/436878/document},
year = {2023},
date = {2023-02-01},
booktitle = {ROADEF 2023},
address = {Rennes , France},
abstract = {The energy performance of buildings represents a major issue of the 21st century. Many
solutions have been discussed to improve buildings' energy performance [1, 4], but the actions
to take differ from one building to another. In other words, current solutions are built on
a case-by-case basis and cannot be extrapolated easily. Indeed, it is difficult to find generic
solutions due to their complexity and heterogeneity.
By placing buildings in groups and subgroups, one can define relevant energy optimization
recommendations without auditing each building individually. Because initial labels are not
always defined, clustering is relevant in our case. Since we seek for intrinsic similarities between
groups and subgroups, hierarchical clustering is needed. Buildings are described with mixed
data. They include numerical data such as surface or number of floors, and categorical data like
types of heating or insulation materials. Few clustering algorithms exist for mixed data, and
even fewer are hierarchical. In this article, we present a method for the hierarchical clustering
of mixed data based on pretopology.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Thuy Nguyen
Mechanical behaviour of bio-inspired beam lattice metamaterials Conférence
Colloque national annuel MecaMat, Aussois, France, 2023.
@conference{nguyen_2184,
title = {Mechanical behaviour of bio-inspired beam lattice metamaterials},
author = {Thuy Nguyen},
editor = {MecaMat},
url = {https://aussois2023.sciencesconf.org/},
year = {2023},
date = {2023-01-01},
booktitle = {Colloque national annuel MecaMat},
address = {Aussois, France},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Hamidreza Vanaei; Sofiane Khelladi; Abbas Tcharkhtchi
Nanotechnology for Pain-Free Dentistry Book Section
Dans: Sabu Thomas, R. M. Baiju (Ed.): Nanomaterials in Dental Medicine, vol. 1, p. 111-120, Springer, https://link.springer.com/chapter/10.1007/978-981-19-8718-2_6, 2023, ISBN: 978-981-19-8718-2.
@incollection{vanaei_2293,
title = {Nanotechnology for Pain-Free Dentistry},
author = {Hamidreza Vanaei and Sofiane Khelladi and Abbas Tcharkhtchi},
editor = {Sabu Thomas, R. M. Baiju},
url = {https://doi.org/10.1007/978-981-19-8718-2_6},
issn = {978-981-19-8718-2},
year = {2023},
date = {2023-04-01},
booktitle = {Nanomaterials in Dental Medicine},
volume = {1},
pages = {111-120},
publisher = {Springer},
address = {https://link.springer.com/chapter/10.1007/978-981-19-8718-2_6},
edition = {1},
abstract = {Nanotechnology is progressively changing the human life and health care in recent years. This technology has the capacity of changing the entire healthcare techniques by proposing novel disease prevention techniques and inventing nanorobots. One of the most important applications of nanotechnology is in the dental medicine that is capable of covering operations free of pain. As pain management is one of the most challenging features in this field of study, incorporation of nanotechnology and pain-free dentistry is of the most concern in both academy and industry. In this chapter, efforts have been taken into account to review various nanotechnologies engaged in dentistry as well as their impact on the pain-free dentistry.},
keywords = {},
pubstate = {published},
tppubtype = {incollection}
}
Swaminath Venkateswaran; Damien Charles Chablat; Denis Creusot
Design and analysis of a series-parallel hybrid 3-SPS-U mechanism Proceedings Article
Dans: Proceedings of the ASME 2023 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Boston, MA, United States, 2023.
@inproceedings{venkateswaran_2304,
title = {Design and analysis of a series-parallel hybrid 3-SPS-U mechanism},
author = {Swaminath Venkateswaran and Damien Charles Chablat and Denis Creusot},
url = {https://event.asme.org/IDETC-CIE},
year = {2023},
date = {2023-08-01},
booktitle = {Proceedings of the ASME 2023 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference},
address = {Boston, MA, United States},
abstract = {This article presents the design and analysis of a series-parallel hybrid tensegrity mechanism. The mechanism has two stages which consist of a fixed base, an intermediate mobile platform, and a mobile end-effector. Each stage is connected by three tension springs and a universal joint in the center. By correlating to a 3-SPS-U architecture, the geometrical equations for the mechanism are generated in the Euler space and the Tilt & Torsion space. To simplify the computations, the Tilt & Torsion space is employed for the analysis of the mechanism. A stability analysis is carried out initially to identify the design parameters of the mechanism in the static mode through an optimization approach. By employing algebraic methods, the singularity analysis is then carried out on the hybrid mechanism. The results of this analysis helped in identifying the feasible workspace and the maximum tilt limits of the architecture. A mapping equation that demonstrates the relation between the Tilt & Torsion angles and the Euler angles is then presented using the results of singularity analysis. A numerical simulation is then demonstrated to validate the results of the analysis. The mechanism under study is then proposed to be integrated into a piping inspection robot for passing through elbows and T-sections.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Pascal Clain; Fatima Benmesbah; Anthony Delahaye; Laurence Fournaison; Olivia Fandino; Livio Ruffine; Véronique Osswald; Christophe Dicharry
Influence of porous media on carbon dioxide hydrate formation and dissociation processes by calorimetry for secondary refrigeration applications Proceedings Article
Dans: 26th International Congress of Refrigeration, Paris, France, 2023.
@inproceedings{clain_2403,
title = {Influence of porous media on carbon dioxide hydrate formation and dissociation processes by calorimetry for secondary refrigeration applications},
author = {Pascal Clain and Fatima Benmesbah and Anthony Delahaye and Laurence Fournaison and Olivia Fandino and Livio Ruffine and Véronique Osswald and Christophe Dicharry},
year = {2023},
date = {2023-08-01},
booktitle = {26th International Congress of Refrigeration},
address = {Paris, France},
keywords = {},
pubstate = {accepted},
tppubtype = {inproceedings}
}
Véronique Osswald; Pascal Clain; Seydina Ndoye; Hong Minh Hoang; Didier Dalmazzone; Anthony Delahaye; Laurence Fournaison
Heat transfer measurement and modeling in a jacketed batch stirred reactor applied to CO2 hydrate formation kinetic study Proceedings Article
Dans: 26th International Congress of Refrigeration, Paris, France, 2023.
@inproceedings{osswald_2404,
title = {Heat transfer measurement and modeling in a jacketed batch stirred reactor applied to CO2 hydrate formation kinetic study},
author = {Véronique Osswald and Pascal Clain and Seydina Ndoye and Hong Minh Hoang and Didier Dalmazzone and Anthony Delahaye and Laurence Fournaison},
year = {2023},
date = {2023-08-01},
booktitle = {26th International Congress of Refrigeration},
address = {Paris, France},
keywords = {},
pubstate = {accepted},
tppubtype = {inproceedings}
}
Yasmine Salehy; Nada Chami; Pascal Clain; Hong Minh Hoang; Didier Dalmazzone; Laurence Fournaison; Anthony Delahaye
Multi-performance assessment of hydrate slurries for secondary refrigeration in a modelled industrial case study Proceedings Article
Dans: 26th International Congress of Refrigeration, Paris, France, 2023.
@inproceedings{salehy_2405,
title = {Multi-performance assessment of hydrate slurries for secondary refrigeration in a modelled industrial case study},
author = {Yasmine Salehy and Nada Chami and Pascal Clain and Hong Minh Hoang and Didier Dalmazzone and Laurence Fournaison and Anthony Delahaye},
year = {2023},
date = {2023-08-01},
booktitle = {26th International Congress of Refrigeration},
address = {Paris, France},
keywords = {},
pubstate = {accepted},
tppubtype = {inproceedings}
}
Walid Samah; Pascal Clain; François Rioual; Laurence Fournaison; Anthony Delahaye
Experimental characterization of surface properties for ice slurry production optimization Proceedings Article
Dans: 26th International Congress of Refrigeration, Paris, France, 2023.
@inproceedings{samah_2406,
title = {Experimental characterization of surface properties for ice slurry production optimization},
author = {Walid Samah and Pascal Clain and François Rioual and Laurence Fournaison and Anthony Delahaye},
year = {2023},
date = {2023-08-01},
booktitle = {26th International Congress of Refrigeration},
address = {Paris, France},
keywords = {},
pubstate = {accepted},
tppubtype = {inproceedings}
}
Nada Chami; Yasmine Salehy; Pascal Clain; Didier Dalmazzone; Anthony Delahaye; Laurence Fournaison
Rheological and thermal study of mixed cyclopentane + CO2 Hydrate slurries for refrigeration applications Proceedings Article
Dans: 26th International Congress of Refrigeration, Paris, France, 2023.
@inproceedings{chami_2407,
title = {Rheological and thermal study of mixed cyclopentane + CO2 Hydrate slurries for refrigeration applications},
author = {Nada Chami and Yasmine Salehy and Pascal Clain and Didier Dalmazzone and Anthony Delahaye and Laurence Fournaison},
year = {2023},
date = {2023-08-01},
booktitle = {26th International Congress of Refrigeration},
address = {Paris, France},
keywords = {},
pubstate = {accepted},
tppubtype = {inproceedings}
}
Sa?chez-Girón Coca Celia; Luc Perera; Mathis Boiteau; Antoine Costanza; Jérôme Grison; Sarnette Emmanuel; Michèle Kanhonou; Frédéric Fauberteau; Nga Nguyen; Jouvelot Pierre
Tala Box: an Interactive Embedded System to Accompany Patients with Cognitive Disorders Proceedings Article
Dans: IEEE/ACM international conference on Connected Health: Applications, Systems and Engineering Technologies, Orlando (Florida), United States, 2023, ISBN: 979-8-4007-0102-3.
@inproceedings{celia_2314,
title = {Tala Box: an Interactive Embedded System to Accompany Patients with Cognitive Disorders},
author = {Sa?chez-Girón Coca Celia and Luc Perera and Mathis Boiteau and Antoine Costanza and Jérôme Grison and Sarnette Emmanuel and Michèle Kanhonou and Frédéric Fauberteau and Nga Nguyen and Jouvelot Pierre},
url = {https://hal-mines-paristech.archives-ouvertes.fr/hal-04071711},
issn = {979-8-4007-0102-3},
year = {2023},
date = {2023-06-01},
booktitle = {IEEE/ACM international conference on Connected Health: Applications, Systems and Engineering Technologies},
address = {Orlando (Florida), United States},
abstract = {Given the lack of drugs to treat cognitive deficit disorders, nonpharmacological approaches have become popular to address these pathologies. In particular, music therapy has been successfully used with Alzheimer's patients to improve their mood and functional abilities. The Tala Sound project studies whether non-Western music from the southern regions of India can be used to improve the mood and functional abilities of Western people suffering from Alzheimer's disease. This traditional style of music, called Carnatic music, is based on specific rhythm sequences, called "talas", that have an irregular rhythm compared to the ones found in Western music. In this paper, we describe the Tala Box, a new multimedia sensory device with which patients can interact while a Carnatic song is being played. The motivation for the development of this embedded system is the intent, in addition to the unusual nature of the music played, to use motor and cognitive stimulation to better engage Alzheimer's patients and, hopefully, improve their mood and mental state. Preliminary testing with healthy seniors has shown great interest in the Tala Box.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Basma Jaffal-Moutarda; Driss Yakoubi
A splitting method for a stationary second grade fluid model Proceedings Article
Dans: The 9th International Conference on Modeling, Simulation and Applied Optimization, Marrakech. Morroco, 2023.
@inproceedings{jaffal-moutarda_2368,
title = {A splitting method for a stationary second grade fluid model},
author = {Basma Jaffal-Moutarda and Driss Yakoubi},
url = {http://2021.icmsao.org/program/},
year = {2023},
date = {2023-04-01},
booktitle = {The 9th International Conference on Modeling, Simulation and Applied Optimization},
address = {Marrakech. Morroco},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Achraf Kallel; Joseph Fitoussi; Mohammadali Shirinbayani; Abbas Tcharkhtchi
Effect of cryogenic conditions on mechanical properties of polypropylene composite (GF50-PP) produced by thermocompression process Proceedings Article
Dans: American Institute of Physics, Fukuoka, Japon, 2023.
@inproceedings{kallel_2221,
title = {Effect of cryogenic conditions on mechanical properties of polypropylene composite (GF50-PP) produced by thermocompression process},
author = {Achraf Kallel and Joseph Fitoussi and Mohammadali Shirinbayani and Abbas Tcharkhtchi},
url = {https://www.pps-37.org/},
year = {2023},
date = {2023-03-01},
booktitle = {American Institute of Physics},
address = {Fukuoka, Japon},
abstract = {The thermocompression molding process allows composites to be made with longer fibers compared to injection molding and extrusion. However, during thermo-compression molding fiber-reinforced composites are exposed to complex effects, which can lead to specific fiber orientation/distribution and therefore affect the mechanical properties. The aim of this work is to study the effect of fiber orientation on the mechanical properties of the long-glass-fiber-reinforced polypropylene (GF50-PP) composite produced by the thermocompression process. Moreover, due to the application of this composite in cold liquid gas storage, it is interesting to study this effect under cryogenic conditions. In this study, composite plates of GF50-PP were cut to analyze the effect of fiber orientations: 0°, 45°, and 90° with respect to the Mold Flow Direction (MFD). After microstructural observations by SEM microscopy and physico-chemical analysis, the mechanical behavior of GF50-PP samples was examined at monotonic tensile loading and tension-tension fatigue at two loading temperatures of 20°C and -70 °C. The results of the tensile tests revealed that the values of stress at break were almost similar at 20°C and -70°C for different fiber orientations of 0°, 45° and 90° and that the temperature effect for the two test conditions is almost insignificant. The tensile-tension fatigue tests at 20°C show the significant effect of the orientation of the fibers when the amplitude of deformation is important. On the other hand, when the amplitude is small, this effect is negligible. In this case, all samples exhibit almost the same behavior. However, during fatigue tests at -70 ° C (cryogenic temperature), the material shows almost uniform linear behavior, but still sensitive to the orientation of the fibers.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Slim Ben Eleuchi; Seddik Shiri; Mohamed Guerich
Sensibilité des coefficients de frottement et des lois d'extrapolations sur la prédiction du retour élastique pour l'acier HSLA420 Proceedings Article
Dans: Proceeding of the Tunisian Congress of Mechanics, Monastir, Tunisia, 2023.
@inproceedings{ben_eleuchi_2373,
title = {Sensibilité des coefficients de frottement et des lois d'extrapolations sur la prédiction du retour élastique pour l'acier HSLA420},
author = {Slim Ben Eleuchi and Seddik Shiri and Mohamed Guerich},
url = {https://www.cotume.tn/proceeding/},
year = {2023},
date = {2023-03-01},
booktitle = {Proceeding of the Tunisian Congress of Mechanics},
address = {Monastir, Tunisia},
abstract = {L'analyse par éléments finis est largement utilisée pour la prédiction du retour élastique, mais la précision dépend fortement des paramètres numériques et physiques. Parmi les paramètres qui affectent la prédiction, on peut citer : le coefficient de frottement, les lois de comportement, la fonction de charge... Dans ce papier, la sensibilité des coefficients de frottement et l'influence d'extrapolation des lois sur la prédiction du retour élastique sont étudiées et analysées. Comme application, nous utilisons un exemple industriel du procédé d'emboutissage : le bavolet d'automobile avec le matériau HSLA420. Toutes les simulations numériques sont effectuées avec le code commercial Pam-stamp 2G.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Perla Nohra; Helmi Ben Rejeb; Swaminath Venkateswaran
Impact of automation during innovative remanufacturing processes in circular economy Proceedings Article
Dans: 2022 IEEE 28th International Conference on Engineering, Technology and Innovation (ICE/ITMC) & 31st International Association For Management of Technology (IAMOT) Joint Conference, IEEE, Nancy, France, 2023, ISBN: 978-1-6654-8817-4.
@inproceedings{nohra_1814,
title = {Impact of automation during innovative remanufacturing processes in circular economy},
author = {Perla Nohra and Helmi Ben Rejeb and Swaminath Venkateswaran},
url = {https://ieeexplore.ieee.org/document/10033231},
issn = {978-1-6654-8817-4},
year = {2023},
date = {2023-02-01},
booktitle = {2022 IEEE 28th International Conference on Engineering, Technology and Innovation (ICE/ITMC) & 31st International Association For Management of Technology (IAMOT) Joint Conference},
publisher = {IEEE},
address = {Nancy, France},
abstract = {With the increasing demand of raw materials nowadays, and the decrease in supplies, the industrial sector is suffering, while the environment and the society are also indirectly affected. The goal to reach a sustainable development imposes several studies on the economic, environmental and community level. The aim of this paper is to provide an overview of the existing literature on automating remanufacturing, and its impacts on the three pillars of sustainability. The outcomes of this study will reveal the impacts of remanufacturing on sustainability and will conceptualize the impact of using automation and cobots, which are among the key concepts in industry 4.0. The investigation that covers each part of the remanufacturing process will help in formalizing an approach about the automation of such processes and improve the remanufacturing sector towards a more sustainable industry.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Ihab Taleb; Guillaume Guérard; Frédéric Fauberteau; Nga Nguyen
A holonic multi-agent architecture for smart grids Proceedings Article
Dans: International Conference on Agents and Artificial Intelligence, Lisbon, Portugal, 2023, ISBN: 978-989-758-547-0.
@inproceedings{taleb_2073,
title = {A holonic multi-agent architecture for smart grids},
author = {Ihab Taleb and Guillaume Guérard and Frédéric Fauberteau and Nga Nguyen},
url = {https://icaart.scitevents.org/},
issn = {978-989-758-547-0},
year = {2023},
date = {2023-02-01},
booktitle = {International Conference on Agents and Artificial Intelligence},
address = {Lisbon, Portugal},
abstract = {The global warming and the increase of fossil fuel prices make the minimization of energy generation an important objective. Thus, smart grids are becoming more and more relevant in a context where we want to regulate the demand according to the available energy. This regulation can be operated thanks to Demand Side Management (DSM) tools. While different models and architectures have been developed for smart grids, only few papers used holonic architectures. For this, we propose in this paper a holonic architecture for smart grids. This type of architectures is relevant to smart grids as it allow the various actors in the grids to work even in the cases of technical problems. Holons in the proposed model are composed of five interconnecting agents that ensure flexibility on the various aspects. This model has been tested and has proven to work on 3 different scenarios. The first scenario simulates a grid in its healthy state. The second one simulates a grid where a region can be disconnected from a blackout for example. The third one simulates a grid with production mismanagement. Results show how the grid distributes the available energy depending on the available production, priorities (if any) and the assurance of the distribution across the various requesting holons.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Ihab Taleb; Guillaume Guérard; Frédéric Fauberteau; Nga Nguyen
A holonic multi-agent architecture for smart grids Proceedings Article
Dans: 15th International Conference on Agents and Artificial Intelligence, Lisbon, Portugal, 2023.
@inproceedings{taleb_2237,
title = {A holonic multi-agent architecture for smart grids},
author = {Ihab Taleb and Guillaume Guérard and Frédéric Fauberteau and Nga Nguyen},
url = {http://www.wikicfp.com/cfp/servlet/event.showcfp?copyownerid=90704&eventid=167079},
year = {2023},
date = {2023-02-01},
booktitle = {15th International Conference on Agents and Artificial Intelligence},
address = {Lisbon, Portugal},
abstract = {The global warming and the increase of fossil fuel prices make the minimization of energy generation animportant objective. Thus, smart grids are becoming more and more relevant in a context where we want toregulate the demand according to the available energy. This regulation can be operated thanks to Demand SideManagement (DSM) tools. While different models and architectures have been developed for smart grids,only few papers used holonic architectures. For this, we propose in this paper a holonic architecture for smartgrids. This type of architectures is relevant to smart grids as it allows the various actors in the grids to workeven in the cases of technical problems. Holons in the proposed model are composed of five interconnectingagents that ensure flexibility on the various aspects. This model has been tested and has proven to work on3 different scenarios. The first scenario simulates a grid in its healthy state. The second one simulates agrid where a region can be disconnected from a blackout for example. The third one simulates a grid withproduction mismanagement. Results show how the grid distributes the available energy depending on theavailable production, priorities (if any) and the assurance of the distribution across the various requestingholons.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Nada Chami; Pascal Clain; Véronique Osswald; Anthony Delahaye; Laurence Fournaison; Didier Dalmazzone
Caractérisation des hydrates mixtes de cyclopentane et CO2 pour les applications de réfrigération Divers
Revue Générale du froid et du conditionnement d'air, 2023.
@misc{chami_2408,
title = {Caractérisation des hydrates mixtes de cyclopentane et CO2 pour les applications de réfrigération},
author = {Nada Chami and Pascal Clain and Véronique Osswald and Anthony Delahaye and Laurence Fournaison and Didier Dalmazzone},
year = {2023},
date = {2023-01-01},
volume = {1190},
howpublished = {Revue Générale du froid et du conditionnement d'air},
keywords = {},
pubstate = {accepted},
tppubtype = {misc}
}
Hamidreza Vanaei; Anouar El Magri; Mohammadali Rastak; Saeedeh Vanaei; Sébastien Vaudreuil; Abbas Tcharkhtchi
Numerical-Experimental Analysis toward the Strain Rate Sensitivity of 3D-Printed Nylon Reinforced by Short Carbon Fiber Article de journal
Dans: Materials, vol. 15, no. 24, p. 8722, 2022.
@article{vanaei_2061,
title = {Numerical-Experimental Analysis toward the Strain Rate Sensitivity of 3D-Printed Nylon Reinforced by Short Carbon Fiber},
author = {Hamidreza Vanaei and Anouar El Magri and Mohammadali Rastak and Saeedeh Vanaei and Sébastien Vaudreuil and Abbas Tcharkhtchi},
url = {https://doi.org/10.3390/ma15248722},
year = {2022},
date = {2022-12-01},
journal = {Materials},
volume = {15},
number = {24},
pages = {8722},
abstract = {Despite the application of the Additive Manufacturing process and the ability of parts' construction directly from a 3D model, particular attention should be taken into account to improve their mechanical characteristics. In this paper, we present the effect of individual process variables and the strain-rate sensitivity of Onyx (Nylon mixed with chopped carbon fiber) manufactured by Fused Filament Fabrication (FFF), using both experimental and simulation manners. The main objective of this paper is to present the effect of the selected printing parameters (print speed and platform temperature) and the sensitivity of the 3D-printed specimen to the strain rate during tensile behavior. A strong variation of tensile behavior for each set of conditions has been observed during the quasi-static tensile test. The variation of 40 °C in the platform temperature results in a 10% and 11% increase in Young's modulus and tensile strength, and 8% decrease in the failure strain, respectively. The variation of 20 mm·s?1 in print speed results in a 14% increase in the tensile strength and 11% decrease in the failure strain. The individual effect of process variables is inevitable and affects the mechanical behavior of the 3D-printed composite, as observed from the SEM micrographs (ductile to brittle fracture). The best condition according to their tensile behavior was chosen to investigate the strain rate sensitivity of the printed specimens both experimentally and using Finite Element (FE) simulations. As observed, the strain rate clearly affects the failure mechanism and the predicted behavior using the FE simulation. Increase in the elongation speed from 1 mm·min?1 to 100 mm·min?1, results in a considerable increase in Young's modulus. SEM micrographs demonstrated that although the mechanical behavior of the material varied by increasing the strain rate, the failure mechanism altered from ductile to brittle failure.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sébastien Vaudreuil; Salah Eddine Bencaid; Hamidreza Vanaei; Anouar El Magri
Effects of Power and Laser Speed on the Mechanical Properties of AlSi7Mg0.6 Manufactured by Laser Powder Bed Fusion Article de journal
Dans: Materials, vol. 15, no. 23, p. 8640, 2022.
@article{vaudreuil_2062,
title = {Effects of Power and Laser Speed on the Mechanical Properties of AlSi7Mg0.6 Manufactured by Laser Powder Bed Fusion},
author = {Sébastien Vaudreuil and Salah Eddine Bencaid and Hamidreza Vanaei and Anouar El Magri},
url = {https://doi.org/10.3390/ma15238640},
year = {2022},
date = {2022-12-01},
journal = {Materials},
volume = {15},
number = {23},
pages = {8640},
abstract = {The AlSi7Mg0.6 alloy, with its good tolerance against strain, is used in laser powder bed fusion (LPBF) to produce parts with complex geometries for aerospace engineering. Production of parts with good mechanical strength requires, however, the optimization of laser parameters. This study thus evaluated the influence of scanning speed, laser power, and strategy on several mechanical properties (tensile/resilience/hardness) to identify an optimal processing region. Results have shown the profound influence of laser power and scanning speed on mechanical properties, with a limited influence from the laser strategy. Tensile strength values ranging from 122 to 394 MPa were obtained, while Young's Modulus varied from 17 to 29 GPa, and the elongation at break ranged from 2.1 to 9.8%. Surface plots of each property against laser power and speed revealed a region of higher mechanical properties. This region is found when using 50 µm thick layers for energy densities between 25 and 35 J/mm3. Operating at higher values of energy density yielded sub-optimal properties, while a lower energy density resulted in poor performances. Results have shown that any optimization strategy must not only account for the volumic energy density value, but also for laser power itself when thick layers are used for fabrication. This was shown through parts exhibiting reduced mechanical performances that were produced within the optimal energy density range, but at low laser power. By combining mid-speed and power within the optimal region, parts with good microstructure and limited defects such as balling, keyhole pores, and hot cracking will be produced. Heat-treating AlSi7Mg0.6 parts to T6 temper negatively affected mechanical performances. Adapted tempering conditions are thus required if improvements are sought through tempering.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Alberto Bottino; Matteo Valerio Falessi; Thomas Hayward-Schneider; Alessandro Biancalani; Sergio Briguglio; R Hatzky; Philipp Lauber; Alexey Mishchenko; Emanuele Poli; B Rettino; Francesco Vannini; Xin Wang; Fulvio Zonca
Time evolution and finite element representation of Phase Space Zonal Structures in ORB5 Article de journal
Dans: Journal of Physics: Conference Series, vol. 2397, p. 012019, 2022.
@article{bottino_2298,
title = {Time evolution and finite element representation of Phase Space Zonal Structures in ORB5},
author = {Alberto Bottino and Matteo Valerio Falessi and Thomas Hayward-Schneider and Alessandro Biancalani and Sergio Briguglio and R Hatzky and Philipp Lauber and Alexey Mishchenko and Emanuele Poli and B Rettino and Francesco Vannini and Xin Wang and Fulvio Zonca},
url = {https://dx.doi.org/10.1088/1742-6596/2397/1/012019},
year = {2022},
date = {2022-12-01},
journal = {Journal of Physics: Conference Series},
volume = {2397},
pages = {012019},
abstract = {Phase Space Zonal Structures (PSZSs), obtained by averaging out dependencies on angle-like variables in the energetic particle (EP) distribution function, play a fundamental role in regulating EP transport induced by Alfvén instabilities in burning plasmas, acting as a slowly varying nonlinear equilibrium state. Therefore, they are of great interest for the development of reduced models for the description of EP heat and particle transport on long time scales, comparable with the energy confinement time, for future burning plasma experiments. In this work, we propose an efficient finite element based projection of the time evolution of the PSZS, suited for global particle-in-cell (PIC) gyrokinetic (GK) codes. The resulting algorithm has been implemented in the global GK PIC code ORB5. PSZSs can not only be used for validating reduced models, but also as a diagnostic tool for characterizing the nonlinear interaction in phase space between Alfvén instabilities and EPs in global GK simulations.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
N'hésitez pas à contacter le service des admissions pour tout renseignement complémentaire :