The research team is interested in modelling the entire energy chain, from production to consumption, including distribution and supervision. Understanding the precise physical functioning of production machines allows us to rationalise their use and use them for storage. An essential numerical part completes the work by proposing models of energy distribution networks and communication systems necessary for the optimisation of the whole.
Based on all engineering fields, innovative materials and structures are experiencing considerable growth. This involves the development of new technologies, including additive manufacturing and intelligent materials. The research team participates in this field of research by focusing on three subjects: multi-scale modelling of materials; improvement of additive manufacturing processes and characterisation of the performance of new materials.
Complex fluid modelling concerns all fluids that cannot be described by the Navier-Stokes equations. Most of the problems studied are related to complex fluid dynamics and multiphase flows, in particular fluid-particle interactions. The research developed involves interdisciplinary collaboration between several scientific fields. We propose a mathematical and numerical analysis of these fluids with industrial applications.
The professors and researchers of the Modeling Group
Publications of the professors and researchers of the Modeling Group
Courbin, Pierre; Clain, Pascal
La lumière : un prisme pour penser nos villes techniquement et socialement intelligentes Miscellaneous
CGE, 2015.
@misc{courbin_660,
title = {La lumière : un prisme pour penser nos villes techniquement et socialement intelligentes},
author = {Pierre Courbin and Pascal Clain},
url = {https://www.cge.asso.fr/liste-actualites/la-lumiere-un-prisme-pour-penser-nos-villes-techniquement-et-socialement-intelligentes/},
year = {2015},
date = {2015-01-01},
howpublished = {CGE},
keywords = {},
pubstate = {published},
tppubtype = {misc}
}
Guérard, Guillaume
Optimisation de la diffusion de l'énergie dans les smarts-grids PhD Thesis
Université de Versailles-Saint Quentin en Yvelines, 2014.
@phdthesis{guerard_1609,
title = {Optimisation de la diffusion de l'énergie dans les smarts-grids},
author = {Guillaume Guérard},
url = {https://tel.archives-ouvertes.fr/tel-01241153/},
year = {2014},
date = {2014-11-01},
school = {Université de Versailles-Saint Quentin en Yvelines},
keywords = {},
pubstate = {published},
tppubtype = {phdthesis}
}
Amor, Sofiane Ben; Bui, Alain; Guérard, Guillaume
A Context-Free Smart Grid Model Using Complex System Approach Inproceedings
In: IEEE/ACM, (Ed.): IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications, pp. 147-154, Toulouse, France, 2014, ISBN: 978-1-4799-6144-3.
@inproceedings{ben_amor_1610,
title = {A Context-Free Smart Grid Model Using Complex System Approach},
author = {Sofiane Ben Amor and Alain Bui and Guillaume Guérard},
editor = {IEEE/ACM},
url = {https://ieeexplore.ieee.org/abstract/document/6957187},
issn = {978-1-4799-6144-3},
year = {2014},
date = {2014-10-01},
booktitle = {IEEE/ACM International Symposium on Distributed Simulation and Real Time Applications},
pages = {147-154},
address = {Toulouse, France},
abstract = {Energy and pollution are urging problems of the 21th century. By gradually changing the actual power grid system, smart grid may evolve into different systems by means of size, elements and strategies, but its fundamental requirements and objectives will not change such as optimizing production, transmission, and consumption. Studying the smart grid through modeling and simulation provides us with valuable results which cannot be obtained in real world due to time and cost related constraints. Moreover, due to the complexity of the smart grid, achieving global optimization is not an easy task. In this paper, we propose a complex system based approach to the smart grid modeling, accentuating on the optimization by combining game theoretical and classical methods in different levels. Thanks to this combination, the optimization can be achieved with flexibility and scalability, while keeping its generality},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Yakoubi, Driss
A Coupled prediction scheme for solving the Navier-Stokes and convection-diffusion equations, Journal Article
In: Siam Journal On Numerical Analysis, vol. 52, no. 5, pp. 2415-2439, 2014.
@article{yakoubi_1695,
title = {A Coupled prediction scheme for solving the Navier-Stokes and convection-diffusion equations,},
author = {Driss Yakoubi},
url = {https://epubs-siam-org.acces.bibl.ulaval.ca/doi/abs/10.1137/130942516},
year = {2014},
date = {2014-10-01},
journal = {Siam Journal On Numerical Analysis},
volume = {52},
number = {5},
pages = {2415-2439},
abstract = {This paper presents a new algorithm for the numerical solution of the Navier--Stokes equations coupled with the convection-diffusion equation. After establishing convergence of the semi-discrete formulation at each time step, we introduce a new iterative scheme based on a projection method called the coupled prediction scheme. We show that even though the predicted temperature is advected by a velocity prediction which is not necessarily divergence free, the theoretical time accuracy of the global scheme is conserved. From a numerical point of view, this new approach gives a faster and more efficient algorithm compared to the usual fixed-point approaches.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Guérard, Guillaume; Tseveendorj, Ider
Largest Inscribed Ball and Minimal Enclosing Box for Convex Maximization Problems Inproceedings
In: Leocadio G. Casado, Eligius M. T. Hendrix; Garcia, Inmaculada (Ed.): Global Optimization Workshop, pp. 61-64, Malaga, Espagne, 2014, ISBN: 978-84-16027-57-6.
@inproceedings{guerard_1611,
title = {Largest Inscribed Ball and Minimal Enclosing Box for Convex Maximization Problems},
author = {Guillaume Guérard and Ider Tseveendorj},
editor = {Leocadio G. Casado, Eligius M.T. Hendrix and Inmaculada Garcia},
url = {https://www.researchgate.net/profile/Guillaume-Guerard/publication/267643443_Largest_Inscribed_Ball_and_Minimal_Enclosing_Box_for_Convex_Maximization_Problems/links/5457671d0cf2bccc490f8373/Largest-Inscribed-Ball-and-Minimal-Enclosing-Box-for-Convex-Maximization-Problems.pdf#page=70},
issn = {978-84-16027-57-6},
year = {2014},
date = {2014-09-01},
booktitle = {Global Optimization Workshop},
pages = {61-64},
address = {Malaga, Espagne},
abstract = {Many important classes of decision models give rise to the problem of finding a global minimum of
a concave function over a convex set. Since such a function may have many local minima, finding
the global minimum is a computationally difficult problem, where standard nonlinear programming
procedures fail. The two proposed methods are simple and quick, using the largest inscribed ball
and the minimal enclosing box as approximation for cutting-plane method.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Kanhonou, Michèle; Cresson, Thierry; Clément, Julien; Lavoie, Frédéric; Hagemeister, Nicola; de Guise, Jacques A.
A method to study 3D knee pseudo-kinematics using low-dose stereo-radiography during static squat Journal Article
In: Computer Methods In Biomechanics And Biomedical Engineering, vol. 17, no. 1, pp. 138-139, 2014.
@article{kanhonou_1710,
title = {A method to study 3D knee pseudo-kinematics using low-dose stereo-radiography during static squat},
author = {Michèle Kanhonou and Thierry Cresson and Julien Clément and Frédéric Lavoie and Nicola Hagemeister and Jacques A. de Guise},
url = {https://www.tandfonline.com/doi/abs/10.1080/10255842.2014.931549},
year = {2014},
date = {2014-08-01},
journal = {Computer Methods In Biomechanics And Biomedical Engineering},
volume = {17},
number = {1},
pages = {138-139},
abstract = {To investigate clinical questions as kinematic or postural differences between healthy and pathological populations,the current trend is to couple imagery to movement or to posture. To do so, researchers generally register a three-dimensional (3D) model acquired from either CT scan or magnetic resonance imaging on 2D fluoroscopic images(registration on dynamic activities) or several radiographs (registration on posture or pseudo-kinematics) (Moro-oka et al.2007). The literature suggests the use of so-called?extrinsic 2D/3D registration'. This implies the need of geometrical objects in the radiographic scene. Embedded tantalum beads or prostheses (Scarvell et al.2010; Sharmaet al.2012), well detectable on the radiographs, are generally used. They allow attaining the expected measurement accuracy <1° and <1mm. When no tantalum beads or prostheses are present, the registration process lacks reliability and accuracy because of the difficulty to extract precise information from the radiographic images (blurry contours, superimposition of structures and cylindrical nature of long bones) (Belvedere et al.2013). The goal of this work was to present an intrinsic 2D/3D registration method and to validate its reliability on patients' images as well as its accuracy on simulated radiographs in a pseudo-kinematic context.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kanhonou, Michèle; Cresson, Thierry; Clément, Julien; Lavoie, Frédéric; Hagemeister, Nicola; de Guise, Jacques A.
2D/3D Registration of Personalized Knee 3D Models on Biplane Radiographs for Morpho-Functional Study Journal Article
In: International Journal Of Computer Assisted Radiology And Surgery, vol. 9, pp. 31-34, 2014.
@article{kanhonou_1711,
title = {2D/3D Registration of Personalized Knee 3D Models on Biplane Radiographs for Morpho-Functional Study},
author = {Michèle Kanhonou and Thierry Cresson and Julien Clément and Frédéric Lavoie and Nicola Hagemeister and Jacques A. de Guise},
url = {https://link.springer.com/article/10.1007%2Fs11548-014-1017-9},
year = {2014},
date = {2014-06-01},
journal = {International Journal Of Computer Assisted Radiology And Surgery},
volume = {9},
pages = {31-34},
abstract = {To investigate kinematic or postural differences between healthy and pathological population, researchers generally register a 3D model acquired either from CT scan or MRI on 2D fluoroscopic images or several radiographs (registration on static posture images: pseudo-kinematics). To attain the needed measurement accuracy, the literature suggests the use of extrinsic 2D/3D registration, with known geometries in the scene (embedded tantalum beads or prostheses [1]). The goal of this work is to present an intrinsic 2D/3D registration method, to validate its reliability on patients' images and its accuracy on simulated radiographs in a pseudo-kinematic context.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yakoubi, Driss
An immersed boundary method for fluid flows around rigid objects Journal Article
In: International Journal for Numerical Methods in Fluids, vol. 75, no. 1, pp. 63-80, 2014.
@article{yakoubi_1696,
title = {An immersed boundary method for fluid flows around rigid objects},
author = {Driss Yakoubi},
url = {https://onlinelibrary-wiley-com.acces.bibl.ulaval.ca/doi/10.1002/fld.3884},
year = {2014},
date = {2014-02-01},
journal = {International Journal for Numerical Methods in Fluids},
volume = {75},
number = {1},
pages = {63-80},
abstract = {In this paper, we present an immersed boundary method for solving fluid flow problems in the presence of static and moving rigid objects. A FEM is used starting from a base mesh that does not represent exactly rigid objects (non?body?conforming mesh). At each time step, the base mesh is locally modified to provide a new mesh fitting the boundary of the rigid objects. The mesh is also locally improved using edge swapping to enhance the quality of the elements. The Navier-Stokes equations are then solved on this new mesh. The velocity of moving objects is imposed through standard Dirichlet boundary conditions. We consider a number of test problems and compare the numerical solutions with those obtained on classical body?fitted meshes whenever possible.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kallel, Achraf; Bouabdallah, Salim; Roelandt, Jean-Marc
A review of different formulations for mortar Contact enforce constraint Inproceedings
In: A review of different formulations for mortar Contact enforce constraint, Mascara, Algeria, 2013.
@inproceedings{kallel_1726,
title = {A review of different formulations for mortar Contact enforce constraint},
author = {Achraf Kallel and Salim Bouabdallah and Jean-Marc Roelandt},
url = {https://www.researchgate.net/publication/337398391_A_review_of_different_formulations_for_mortar_contact_constraint_enforcement},
year = {2013},
date = {2013-11-01},
booktitle = {A review of different formulations for mortar Contact enforce constraint},
address = {Mascara, Algeria},
abstract = {A framework is presented within which the mortar element method is readily applied to contact problem. This paper describes different formulations to enforce contact constraint. The proposed traitement of contact by using penalty, Lagrange multipliers and augmented Lagrange multipliers techniques is essentially for frictionless contact. For the different three formulations of contact we presented a set of numerical exemples.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Kallel, Achraf; Bouabdallah, Salim; Roelandt, Jean-Marc
A Mortar algorithm for finite deformation contact problems Inproceedings
In: A Mortar algorithm for finite deformation contact problems, Bordeaux, France, 2013.
@inproceedings{kallel_1727,
title = {A Mortar algorithm for finite deformation contact problems},
author = {Achraf Kallel and Salim Bouabdallah and Jean-Marc Roelandt},
url = {http://documents.irevues.inist.fr/bitstream/handle/2042/52925/p_Z64L61F2.pdf?sequence=1},
year = {2013},
date = {2013-08-01},
booktitle = {A Mortar algorithm for finite deformation contact problems},
address = {Bordeaux, France},
abstract = {For the simulation of contact problems with the finite element method we usually use the NTS (Node-To-
Segment) formulation for transmitting contact constraints from one body to another. The use of the NTS
method involves a loss of accuracy in the calculation of the displacements and stresses in the contact area
because of the node-wise contact constraint enforcement. We can overcome this problem by using the mortar
method [1] which has been successfully applied to solve contact problems with finite deformations. The
enforcement of contact constraints is applied in a weak sense throughout the contact interface. In this work,
we describe several techniques for solving contact problems using the mortar approach. The penalty
technique [2], the Lagrange multipliers method [2-3] and the augmented Lagrangian formulation [4-5] are
used for solving various numerical problems. A simplified algorithm is described to implement these types of
formulations.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Kallel, Achraf; Bouabdallah, Salim; Roelandt, Jean-Marc
A single scheme for two-dimensional problems mortar frictional touch Inproceedings
In: ICCCM 2013 Proceedings, Leece, Italy, 2013.
@inproceedings{kallel_1728,
title = {A single scheme for two-dimensional problems mortar frictional touch},
author = {Achraf Kallel and Salim Bouabdallah and Jean-Marc Roelandt},
url = {http://eccomas.cimne.com/cvdata/cntr1/spc10/dtos/img/mdia/ICCCM2013-proceedings.pdf},
year = {2013},
date = {2013-07-01},
booktitle = {ICCCM 2013 Proceedings},
address = {Leece, Italy},
abstract = {During the last decade, the mortar method for contact problems discretization has gained a large popularity in the literature to overcome the drawbacks of the traditional NTS method (Node-toSegment). This method is derived from a technique originally used for domain decomposition. The connection between the bodies in contact is realized via integration over the contact surface (in a weak sense) which ensures stress continuity at the interface. In addition, this method alleviates the
limit of the contacting mesh interpolation order and passes the patch test.
The contact constraint enforcement in mortar method, as in NTS method could be achieved
through different formulations. These are penalty formulation [1], Lagrange multipliers [2] and augmented Lagrangian method [3] and [4].},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Guérard, Guillaume; Amor, Sofiane Ben
Méthode d'Analyse d'un Système Complexe pour la Recherche Opérationnelle : Smart Grid Inproceedings
In: Recherche opérationnelle et aide à la décision en France, Troyes, France, 2013.
@inproceedings{guerard_1612,
title = {Méthode d'Analyse d'un Système Complexe pour la Recherche Opérationnelle : Smart Grid},
author = {Guillaume Guérard and Sofiane Ben Amor},
url = {http://roadef2013.utt.fr/roadef_ebook2.pdf},
year = {2013},
date = {2013-02-01},
booktitle = {Recherche opérationnelle et aide à la décision en France},
address = {Troyes, France},
abstract = {L'objectif de ce papier est de fournir une méthode d'analyse et de décomposition d'un système complexe dans l'optique d'optimiser le système global. L'utilisation de la recherche opérationnelle dans un réseau complexe nécessite une méthode précise. Afin de démontrer la pertinence
de cette méthode, nous proposons une modélisation d'un Smart Grid fiable et efficace, c'est-à-dire un réseau de distribution électrique bidirectionnel et non centralisé.
Le réseau électrique est poussé dans ses limites, et la venue de nouvelles technologies telles que les énergies renouvelables ou la production décentralisée mettent en péril la structure. Le Smart Grid n'a pas pour objectif de remplacer le réseau électrique actuel, mais de l'améliorer.
Afin de garantir une modélisation efficace et une optimisation rapide du Smart Grid, nous devons les étudier de manière systémique afin d'en extraire les caractéristiques principales et le comportement des différents éléments composant le système global interne et les relations
externes.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Guérard, Guillaume
Smart Grid and Optimization Journal Article
In: American Journal of Operations Research, vol. 3, no. 1A, pp. 11, 2013.
@article{guerard_1615,
title = {Smart Grid and Optimization},
author = {Guillaume Guérard},
url = {https://www.scirp.org/html/13-1040207_27556.htm},
year = {2013},
date = {2013-01-01},
journal = {American Journal of Operations Research},
volume = {3},
number = {1A},
pages = {11},
abstract = {With urging problem of energy and pollution, smart grid is becoming ever important. By gradually changing the actual power grid system, smart grid may evolve into different systems by means of size, elements and strategies, but its fundamental requirements and objectives will not change such as optimizing production, transmission and consumption. Studying the smart grid through modeling and simulation provides us with valuable results which can not be obtained in real world due to time and cost related constraints. However, due to the complexity of the smart grid, achieving optimization is not an easy task, even using computer models. In this paper, we propose a complex system based approach to the smart grid modeling, accentuating on the optimization by combining game theoretical and classical methods in different levels. Thanks to this combination, the optimization can be achieved with flexibility and scalability, while keeping its generality.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Guérard, Guillaume
Survey on smart grid modelling Journal Article
In: International Journal Of Data Mining And Bioinformatics, vol. 4, no. 4, pp. 262-279, 2012.
@article{guerard_1616,
title = {Survey on smart grid modelling},
author = {Guillaume Guérard},
url = {https://www.inderscienceonline.com/doi/abs/10.1504/IJSCC.2012.050822},
year = {2012},
date = {2012-12-01},
journal = {International Journal Of Data Mining And Bioinformatics},
volume = {4},
number = {4},
pages = {262-279},
abstract = {Smart grid is a vague concept with little theoretical studies. We propose in this paper a state of the art on smart grids to clarify the concept and identify the important issues. We analyse different visions to bring out the characteristics of smart grids.
This term refers to an electrical optimised network integrating the behaviour and actions of users (generators, consumers, consume-actors, etc.). These power grid's upgrades aim: to improve quality and security, to reduce environmental impact, and allow consumers to play a regulation role in the system.
Current simulations are done on specific cases and with a limited evolution. A better knowledge of the smart grid structure and characteristics would give a more effective and more efficient, global modelling. Smart grids have many characteristics corresponding to complex systems. We propose to analyse these similarities to reach a better understanding and a holistic view of smart grid's concept.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Guérard, Guillaume; Amor, Sofiane Ben; Bui, Alain
A Complex System Approach for Smart Grid Analysis and Modeling Inproceedings
In: Advances in Knowledge-Based and Intelligent Information and Engineering Systems, pp. 788 - 797, IOS Press, San Sebastian, Espagne, 2012, ISBN: 978-1-61499-104-5.
@inproceedings{guerard_1614,
title = {A Complex System Approach for Smart Grid Analysis and Modeling},
author = {Guillaume Guérard and Sofiane Ben Amor and Alain Bui},
url = {https://ebooks.iospress.nl/volumearticle/7258},
issn = {978-1-61499-104-5},
year = {2012},
date = {2012-09-01},
booktitle = {Advances in Knowledge-Based and Intelligent Information and Engineering Systems},
number = {Frontiers in Artificial Intelligence and},
pages = {788 - 797},
publisher = {IOS Press},
address = {San Sebastian, Espagne},
abstract = {Smart Grid is a vague concept with little theoretical studies. We propose in this paper a state of the art on Smart Grids to clarify the concept and identify the important issues.
This term refers to an electrical network integrating the behavior and actions of users. It uses new information and communication technologies and new services combining: monitoring, control, communication and self-healing.
Current simulations are done on specific, preset cases and with a limited evolution. A better knowledge of the smart grid structure and characteristics would give a more effective and more efficient, global modeling. Smart Grids have many characteristics corresponding to complex systems. We propose to analyze these similarities to reach a better understanding and a holistic view of smart grid's concept.
The objective of this paper is to provide theoretical research themes that could help the design of a reliable and efficient Smart Grid.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Hamdache, Kamel; Jaffal-Moutarda, Basma
Existence and uniqueness of solutions for the magnetohydrodynamic flow of a second grade fluid Journal Article
In: Mathematical Methods In The Applied Sciences, vol. 36, no. 4, pp. 478-496, 2012.
@article{hamdache_1785,
title = {Existence and uniqueness of solutions for the magnetohydrodynamic flow of a second grade fluid},
author = {Kamel Hamdache and Basma Jaffal-Moutarda},
url = {https://www.researchgate.net/publication/258804643_Existence_and_uniqueness_of_solutions_for_the_magnetohydrodynamic_flow_of_a_second_grade_fluid},
year = {2012},
date = {2012-06-01},
journal = {Mathematical Methods In The Applied Sciences},
volume = {36},
number = {4},
pages = {478-496},
abstract = {In this work, we consider the flow of a second grade fluid in a conducting domain of R3 and in the presence of a magnetic field. When the initial data are of arbitrary size, we prove that the solution of the magnetohydrodynamics problem exists for a small time and is unique. We also show the global existence of solutions for small initial data.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Guérard, Guillaume; Amor, Sofiane Ben
Approche système complexe pour la modélisation des Smart Grids Inproceedings
In: Recherche opérationnelle et aide à la décision en France, Angers, France, 2012.
@inproceedings{guerard_1613,
title = {Approche système complexe pour la modélisation des Smart Grids},
author = {Guillaume Guérard and Sofiane Ben Amor},
url = {roadef2012.ima.uco.fr/index.htm},
year = {2012},
date = {2012-04-01},
booktitle = {Recherche opérationnelle et aide à la décision en France},
address = {Angers, France},
abstract = {L'objectif de ce papier est d'exposer des axes thématiques théoriques de recherche pour la conception d'un Smart Grid fiable et efficace, c'est-à-dire un réseau de distribution d'énergie électrique bidirectionnel non centralisé. Des nouvelles techniques et méthodes doivent rendre l'Energy Grid actuel plus flexible, accessible, fiable et économique. Certains appareils tels Linky sont déjà fonctionnels, mais la structure est poussée dans ses limites et n'est pas en mesure de supporter davantage de technologies analogiques ou numériques récentes.
Afin de garantir une modélisation efficace et une optimisation rapide de Smart Grids, nous devons les étudier de manière systémique afin d'en extraire les caractéristiques principales et le comportement des différents éléments composant le système global.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Jaffal-Moutarda, Basma
Long-time asymptotics of the second grade fluid equations on R^2 Journal Article
In: Dynamics Of Partial Differential Equations, vol. 8, no. 3, pp. 185-223, 2011.
@article{jaffal-moutarda_1784,
title = {Long-time asymptotics of the second grade fluid equations on R^2},
author = {Basma Jaffal-Moutarda},
url = {https://www.intlpress.com/site/pub/pages/journals/items/dpde/content/vols/0008/0003/a002/},
year = {2011},
date = {2011-09-01},
journal = {Dynamics Of Partial Differential Equations},
volume = {8},
number = {3},
pages = {185-223},
abstract = {We study the large time behavior of solutions of the second grade fluid system in the space R². Using scaled variables and introducing several functionals in weighted Sobolev spaces, we prove that the solution of the second grade fluid equations converges to the Oseen vortex, if the initial data are small enough. We also give an estimate of the rate of convergence.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yakoubi, Driss
Influence of the spray retroaction on the airflow Journal Article
In: Esaim: proceedings and surveys, vol. 30, pp. 153-165, 2010.
@article{yakoubi_1697,
title = {Influence of the spray retroaction on the airflow},
author = {Driss Yakoubi},
url = {https://www.esaim-proc.org},
year = {2010},
date = {2010-12-01},
journal = {Esaim: proceedings and surveys},
volume = {30},
pages = {153-165},
abstract = {In this work, we investigate the influence of a spray evolving in the air, in the respiration
framework. We consider two kinds of situations: a moving spray in a motionless fluid, and motionless
particles in a Poiseuille flow. We observe that the spray retroaction may not be neglected in some
situations which can really happen, for instance, when one considers rather big particles, as it is possible
for polluting particles and even for some therapeutic aerosols. The retroaction is even responsible for
increasing the deposition phenomenon.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Jaffal-Moutarda, Basma
Dynamique des fluides de grade deux PhD Thesis
Université Paris-Saclay, Faculté des sciences d'Orsay, 2010.
@phdthesis{jaffal-moutarda_1786,
title = {Dynamique des fluides de grade deux},
author = {Basma Jaffal-Moutarda},
url = {https://tel.archives-ouvertes.fr/tel-00640385},
year = {2010},
date = {2010-12-01},
address = {Bâtiment 307, rue Michel Magat, Faculté des Sciences d'Orsay, Université Paris-Saclay F-91405 Orsay Cedex},
school = {Université Paris-Saclay, Faculté des sciences d'Orsay},
keywords = {},
pubstate = {published},
tppubtype = {phdthesis}
}
Yakoubi, Driss
An Iterative Procedure to Solve a Coupled Two-Fluids Turbulence Model Journal Article
In: Esaim-Mathematical Modelling And Numerical Analysis-Modelisation Mathematique Et Analyse Numerique, vol. 44, no. 4, pp. 693 - 713, 2010.
@article{yakoubi_1699,
title = {An Iterative Procedure to Solve a Coupled Two-Fluids Turbulence Model},
author = {Driss Yakoubi},
url = {https://www-esaim-m2an-org.acces.bibl.ulaval.ca/articles/m2an/abs/2010/04/m2an0827/m2an0827.html},
year = {2010},
date = {2010-08-01},
journal = {Esaim-Mathematical Modelling And Numerical Analysis-Modelisation Mathematique Et Analyse Numerique},
volume = {44},
number = {4},
pages = {693 - 713},
abstract = {This paper introduces a scheme for the numerical approximation of a model for two turbulent flows with coupling at an interface. We consider the variational formulation of the coupled model, where the turbulent kinetic energy equation is formulated by transposition. We prove the convergence of the approximation to this formulation for 3D flows for large turbulent viscosities and smooth enough flows, whenever bounded in W1,p Sobolev norms for p large enough. Under the same assumptions, we show that the limit is a solution of the initial problem. Finally, we give some numerical experiments to enlighten the theoretical work.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yakoubi, Driss
Numerical Model for the 2D Simulation of the Respiration Journal Article
In: Esaim: proceedings and surveys, vol. 28, pp. 162-181, 2009.
@article{yakoubi_1698,
title = {Numerical Model for the 2D Simulation of the Respiration},
author = {Driss Yakoubi},
url = {https://www.esaim-proc.org/articles/proc/abs/2009/03/proc092810/proc092810.html},
year = {2009},
date = {2009-12-01},
journal = {Esaim: proceedings and surveys},
volume = {28},
pages = {162-181},
abstract = {In this article we are interested in the simulation of the air flow in the bronchial tree. The model we use has already been described in [2] and is based on a three part description of the respiratory tract. This model leads, after time discretization, to a Stokes system with non standard dissipative boundary conditions that cannot be easily and directly implemented in most FEM software, in particular in FreeFEM++ [11]. The objective is here to provide a new numerical method that could be implemented in any softwares. After describing the method, we illustrate it by two-dimensional simulations.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yakoubi, Driss
A Lower Bound for the Inf-Sup Condition's Constant for the Divergence Operator Journal Article
In: Comptes Rendus Mathematique, vol. 346, no. 9-10, pp. 533-538, 2008.
@article{yakoubi_1700,
title = {A Lower Bound for the Inf-Sup Condition's Constant for the Divergence Operator},
author = {Driss Yakoubi},
url = {https://www-sciencedirect-com.acces.bibl.ulaval.ca/science/article/pii/S1631073X08000915?via%3Dihub},
year = {2008},
date = {2008-03-01},
journal = {Comptes Rendus Mathematique},
volume = {346},
number = {9-10},
pages = {533-538},
abstract = {The inf-sup condition plays an important role in problems from fluid mechanics. The purpose of this Note is to give, for any connected bounded open set ? with a Lipschitz-continuous boundary, a lower bound for the inf-sup condition's constant that only depends on the norm of the harmonic trace lifting on ? and on the where is a constant defined by},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Yakoubi, Driss
Analyse et mise en oeuvre de nouveaux algorithmes en méthodes spectrales. PhD Thesis
Pierre et Marie Curie (Sorbonne Univ), 2007.
@phdthesis{yakoubi_1701,
title = {Analyse et mise en oeuvre de nouveaux algorithmes en méthodes spectrales.},
author = {Driss Yakoubi},
url = {https://www.researchgate.net/profile/Driss-Yakoubi-2/research},
year = {2007},
date = {2007-12-01},
address = {4 place Jussieu. 75000 Paris},
school = {Pierre et Marie Curie (Sorbonne Univ)},
keywords = {},
pubstate = {published},
tppubtype = {phdthesis}
}
Trompette, Nicolas; Guerich, Mohamed
An experimental validation of a vibro-acoustic simplified prediction by the use of simplified methods Journal Article
In: Applied Acoustics, vol. 66, pp. 427- 445., 2005.
@article{trompette_1396,
title = {An experimental validation of a vibro-acoustic simplified prediction by the use of simplified methods},
author = {Nicolas Trompette and Mohamed Guerich},
url = {https://www.sciencedirect.com/science/article/abs/pii/S0003682X04001434},
year = {2005},
date = {2005-01-01},
journal = {Applied Acoustics},
volume = {66},
pages = {427- 445.},
abstract = {Predicting the vibro-acoustic behaviour of a structure is usually done by using the well
established finite element (FE) method and boundary element method. This paper presents
a vibro-acoustic prediction case performed on a metal box using less accurate but simplified
methods: sub-structuring for the calculation of the dynamic response of the structure, and a
monopole distribution for the radiated noise calculation. Both are less accurate but faster
methods than previous ones. An experimental validation was performed. It led to the conclusion
that these methods give precise results and are sufficient for the pre-design of structures in
the low frequency domain. However, this conclusion must be moderated by the fact that in
spite of the simplicity of the structure, the FE model had to be adjusted to the experiments
to yield to a result close to the experiments.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
