Literatura académica sobre el tema "Méthode de décomposition de domaine optimisée"
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Artículos de revistas sobre el tema "Méthode de décomposition de domaine optimisée"
Martin, Véronique. "Méthode de décomposition de domaine et de couplage pour des problèmes d’évolution". Annales mathématiques Blaise Pascal 9, n.º 2 (2002): 299–312. http://dx.doi.org/10.5802/ambp.162.
Texto completoBendali, Abderrahmane y Yassine Boubendir. "Méthode de décomposition de domaine et éléments finis nodaux pour la résolution de l'équation d'Helmholtz". Comptes Rendus Mathematique 339, n.º 3 (agosto de 2004): 229–34. http://dx.doi.org/10.1016/j.crma.2004.06.002.
Texto completoMussard, Stéphane. "La décomposition des mesures d’inégalité en sources de revenu : méthodes et applications*". L'Actualité économique 83, n.º 3 (28 de mayo de 2008): 415–45. http://dx.doi.org/10.7202/018116ar.
Texto completoGmati, Nabil y Naouel Zrelli. "Numerical study of some iterative solvers for acoustics in unbounded domains". Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 4, 2006 (20 de agosto de 2006). http://dx.doi.org/10.46298/arima.1849.
Texto completoGUETAT, Rim. "Coupling Parareal with Non-Overlapping Domain Decomposition Method". Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 23 - 2016 - Special... (13 de diciembre de 2016). http://dx.doi.org/10.46298/arima.1474.
Texto completoVo, Romain, Julie Escoda, Caroline Vienne y Étienne Decencière. "Approches Deep Learning sur Données Simulées pour la Tomographie Industrielle rapide". e-journal of nondestructive testing 28, n.º 9 (septiembre de 2023). http://dx.doi.org/10.58286/28537.
Texto completoMraoui, Hamid y Driss Sbibih. "Hermite spline interpolents ― New methods for constructing and compressing Hermite interpolants". Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 5, Special Issue TAM... (18 de noviembre de 2006). http://dx.doi.org/10.46298/arima.1871.
Texto completoTesis sobre el tema "Méthode de décomposition de domaine optimisée"
Japhet, Caroline. "Méthode de décomposition de domaine et conditions aux limites artificielles en mécanique des fluides: méthode Optimisée d'Orde 2". Phd thesis, Université Paris-Nord - Paris XIII, 1998. http://tel.archives-ouvertes.fr/tel-00558701.
Texto completoJaphet, Caroline. "Méthode de décomposition de domaine et conditions aux limites artificielles en mécanique des fluides : méthode optimisée d'ordre 2 (002)". Paris 13, 1998. http://www.theses.fr/1998PA132044.
Texto completoBadia, Ismaïl. "Couplage par décomposition de domaine optimisée de formulations intégrales et éléments finis d’ordre élevé pour l’électromagnétisme". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0058.
Texto completoIn terms of computational methods, solving three-dimensional time-harmonic electromagnetic scattering problems is known to be a challenging task, most particularly in the high frequency regime and for dielectric and inhomogeneous scatterers. Indeed, it requires to discretize a system of partial differential equations set in an unbounded domain. In addition, considering a small wavelength λ in this case, naturally requires very fine meshes, and therefore leads to very large number of degrees of freedom. A standard approach consists in combining integral equations for the exterior domain and a weak formulation for the interior domain (the scatterer) resulting in a formulation coupling the Boundary Element Method (BEM) and the Finite Element Method (FEM). Although natural, this approach has some major drawbacks. First, this standard coupling method yields a very large system having a matrix with sparse and dense blocks, which is therefore generally hard to solve and not directly adapted to compression methods. Moreover, it is not possible to easily combine two pre-existing solvers, one FEM solver for the interior domain and one BEM solver for the exterior domain, to construct a global solver for the original problem. In this thesis, we present a well-conditioned weak coupling formulation between the boundary element method and the high-order finite element method, allowing the construction of such a solver. The approach is based on the use of a non-overlapping domain decomposition method involving optimal transmission operators. The associated transmission conditions are constructed through a localization process based on complex rational Padé approximants of the nonlocal Magnetic-to-Electric operators. The number of iterations required to solve this weak coupling is only slightly dependent on the geometry configuration, the frequency, the contrast between the subdomains and the mesh refinement
Martin, Véronique. "Méthodes de décomposition de domaine de type relaxation d'ondes pour des équations de l'océanographie". Phd thesis, Université Paris-Nord - Paris XIII, 2003. http://tel.archives-ouvertes.fr/tel-00583196.
Texto completoBerthe, Paul-Marie. "Méthodes de décomposition de domaine de type relaxation d'ondes optimisées pour l'équation de convection-diffusion instationnaire discrétisée par volumes finis". Thesis, Paris 13, 2013. http://www.theses.fr/2013PA132055.
Texto completoIn the context of nuclear waste repositories, we consider the numerical discretization of the non stationary convection diffusion equation. Discontinuous physical parameters and heterogeneous space and time scales lead us to use different space and time discretizations in different parts of the domain. In this work, we choose the discrete duality finite volume (DDFV) scheme and the discontinuous Galerkin scheme in time, coupled by an optimized Scwharz waveform relaxation (OSWR) domain decomposition method, because this allows the use of non-conforming space-time meshes. The main difficulty lies in finding an upwind discretization of the convective flux which remains local to a sub-domain and such that the multidomain scheme is equivalent to the monodomain one. These difficulties are first dealt with in the one-dimensional context, where different discretizations are studied. The chosen scheme introduces a hybrid unknown on the cell interfaces. The idea of upwinding with respect to this hybrid unknown is extended to the DDFV scheme in the two-dimensional setting. The well-posedness of the scheme and of an equivalent multidomain scheme is shown. The latter is solved by an OSWR algorithm, the convergence of which is proved. The optimized parameters in the Robin transmission conditions are obtained by studying the continuous or discrete convergence rates. Several test-cases, one of which inspired by nuclear waste repositories, illustrate these results
Hoang, Thi Thao Phuong. "Méthodes de décomposition de domaine espace-temps pour la formulation mixte de problèmes d'écoulement et de transport en milieu poreux". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2013. http://tel.archives-ouvertes.fr/tel-00922325.
Texto completoSzydlarski, Mikolaj. "Algebraic Domain Decomposition Methods for Darcy flow in heterogeneous media". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2010. http://tel.archives-ouvertes.fr/tel-00550728.
Texto completoHaferssas, Ryadh Mohamed. "Espaces grossiers pour les méthodes de décomposition de domaine avec conditions d'interface optimisées". Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066450.
Texto completoThe objective of this thesis is to design an efficient domain decomposition method to solve solid and fluid mechanical problems, for this, Optimized Schwarz methods (OSM) are considered and revisited. The optimized Schwarz methods were introduced by P.L. Lions. They consist in improving the classical Schwarz method by replacing the Dirichlet interface conditions by a Robin interface conditions and can be applied to both overlapping and non overlapping subdomains. Robin conditions provide us an another way to optimize these methods for better convergence and more robustness when dealing with mechanical problem with almost incompressibility nature. In this thesis, a new theoretical framework is introduced which consists in providing an Additive Schwarz method type theory for optimized Schwarz methods, e.g. Lions' algorithm. We define an adaptive coarse space for which the convergence rate is guaranteed regardless of the regularity of the coefficients of the problem. Then we give a formulation of a two-level preconditioner for the proposed method. A broad spectrum of applications will be covered, such as incompressible linear elasticity, incompressible Stokes problems and unstationary Navier-Stokes problem. Numerical results on a large-scale parallel experiments with thousands of processes are provided. They clearly show the effectiveness and the robustness of the proposed approach
Caudron, Boris. "Couplages FEM-BEM faibles et optimisés pour des problèmes de diffraction harmoniques en acoustique et en électromagnétisme". Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0062/document.
Texto completoIn this doctoral dissertation, we propose new methods for solving acoustic and electromagnetic three-dimensional harmonic scattering problems for which the scatterer is penetrable and inhomogeneous. The resolution of such problems is key in the computation of sonar and radar cross sections (SCS and RCS). However, this task is known to be difficult because it requires discretizing partial differential equations set in an exterior domain. Being unbounded, this domain cannot be meshed thus hindering a volume finite element resolution. There are two standard approaches to overcome this difficulty. The first one consists in truncating the exterior domain and renders possible a volume finite element resolution. Given that they approximate the scattering problems at the continuous level, truncation methods may however not be accurate enough for SCS and RCS computations. Inhomogeneous penetrable harmonic scattering problems can also be solved by coupling a volume variational formulation associated with the scatterer and surface integral equations related to the exterior domain. This approach is known as FEM-BEM coupling (Finite Element Method-Boundary Element Method). It is of great interest because it is exact at the continuous level. Classical FEM-BEM couplings are qualified as strong because they couple the volume variational formulation and the surface integral equations within one unique formulation. They are however not suited for solving high-frequency problems. To remedy this drawback, other FEM-BEM couplings, said to be weak, have been proposed. These couplings are actually domain decomposition algorithms iterating between the scatterer and the exterior domain. In this thesis, we introduce new acoustic and electromagnetic weak FEM-BEM couplings based on recently developed Padé approximations of Dirichlet-to-Neumann and Magnetic-to-Electric operators. The number of iterations required to solve these couplings is only slightly dependent on the frequency and the mesh refinement. The weak FEM-BEM couplings that we propose are therefore suited to accurate SCS and RCS computations at high frequencies
Caudron, Boris. "Couplages FEM-BEM faibles et optimisés pour des problèmes de diffraction harmoniques en acoustique et en électromagnétisme". Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0062.
Texto completoIn this doctoral dissertation, we propose new methods for solving acoustic and electromagnetic three-dimensional harmonic scattering problems for which the scatterer is penetrable and inhomogeneous. The resolution of such problems is key in the computation of sonar and radar cross sections (SCS and RCS). However, this task is known to be difficult because it requires discretizing partial differential equations set in an exterior domain. Being unbounded, this domain cannot be meshed thus hindering a volume finite element resolution. There are two standard approaches to overcome this difficulty. The first one consists in truncating the exterior domain and renders possible a volume finite element resolution. Given that they approximate the scattering problems at the continuous level, truncation methods may however not be accurate enough for SCS and RCS computations. Inhomogeneous penetrable harmonic scattering problems can also be solved by coupling a volume variational formulation associated with the scatterer and surface integral equations related to the exterior domain. This approach is known as FEM-BEM coupling (Finite Element Method-Boundary Element Method). It is of great interest because it is exact at the continuous level. Classical FEM-BEM couplings are qualified as strong because they couple the volume variational formulation and the surface integral equations within one unique formulation. They are however not suited for solving high-frequency problems. To remedy this drawback, other FEM-BEM couplings, said to be weak, have been proposed. These couplings are actually domain decomposition algorithms iterating between the scatterer and the exterior domain. In this thesis, we introduce new acoustic and electromagnetic weak FEM-BEM couplings based on recently developed Padé approximations of Dirichlet-to-Neumann and Magnetic-to-Electric operators. The number of iterations required to solve these couplings is only slightly dependent on the frequency and the mesh refinement. The weak FEM-BEM couplings that we propose are therefore suited to accurate SCS and RCS computations at high frequencies
Libros sobre el tema "Méthode de décomposition de domaine optimisée"
MEURANT y G. Meurant. Computer Solution of Large Linear Systems. North Holland, 1999.
Buscar texto completoActas de conferencias sobre el tema "Méthode de décomposition de domaine optimisée"
MORDANE, Soumia, Khalid ADNAOUI, Mohamed LOUKILI, Noureddine TOUNSI y Mohamed CHAGDALI. "La méthode de décomposition du domaine : Application à un problème de soutirage". En Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2015. http://dx.doi.org/10.5150/cmcm.2015.063.
Texto completoADNAOUI, Khalid, Nourdine TOUNSI, Mohamed CHAGDALI y Soumia MORDANE. "Méthode de décomposition du domaine pour la modélisation numérique d’un jet par la méthode particule-maillage". En Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2014. http://dx.doi.org/10.5150/jngcgc.2014.002.
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