Zobrazeno 1 - 10 of 47 pro vyhledávání: '"Estimation d'erreur a posteriori"'
1
Développement de techniques d'adaptation hp basées sur les méthodes de Galerkine discontinues avec application à des configurations aéronautiques
Autor: Basile, Francesca
In this thesis, novel h- and hp-adaptive strategies suited for the discontinuous Galerkin formulation of the compressible Navier Stokes equations are established in the framework of the European collaborative project CODA (CFD ONERA DLR Airbus). The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::7a5a2cfebfad0441f6a2eb7a9a44743d
https://theses.hal.science/tel-03900415
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2
Problèmes d'interfaces pour les ouvrages hydrauliques
Autor: Fontana, Ilaria
Engineering teams often use finite element numerical simulations for the design, study and analysis of the behavior of large hydraulic structures. For concrete structures, models of increasing complexity must be able to take into account the nonlinea
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::9de617226e252854cc111c09f5dd1d91
https://theses.hal.science/tel-03703584v2
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3
Méthode de Galerkin discontinu pour le calcul auto-adaptatif en équation intégrale acoustique
Autor: Messaï, Nadir-Alexandre
Cette thèse est dédiée à la conception et à l'étude d'une structure de boucle de raffinement auto-adaptative pour résoudre de manière fiable les équations intégrales acoustiques. Notre démarche est de revisiter l'ensemble des briques const
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=artemis___fr::8b279c1b1b1c2fc1c67568c4df0ce0b0
http://depozit.isae.fr/theses/2021/2021_Messai_Nadir-Alexandre_D.pdf
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4
A high-order h-adaptive discontinuous Galerkin method for unstructured grids based on a posteriori error estimation
Autor: Pascal Frey, Francesca Basile, Romain Laraufie, Jean-Baptiste Chapelier, Marta de la Llave Plata
Publikováno v: AIAA Scitech 2021 Forum
AIAA Scitech 2021 Forum, Jan 2021, VIRTUAL EVENT, United States. ⟨10.2514/6.2021-1696⟩
Scopus-Elsevier
International audience; In this paper, we present a mesh h-adaptation strategy suited for the discontinuous Galerkin formulation of the compressible Navier-Stokes equations on unstructured grids, based on the simplicial remeshing library MMG. A novel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaa66d8c04e955ecbb39e84135bdfa2d
https://hal.archives-ouvertes.fr/hal-03380295/file/DAAA21135.1633532891_postprint.pdf
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5
Simulation numérique des écoulements en milieux poreux non-saturés par une méthode de Galerkine discontinue adaptative : application aux plages sableuses
Autor: Clément, Jean-Baptiste
Publikováno v: Fluid mechanics [physics.class-ph]. Université de Toulon, 2021. English
Mechanics of the fluids [physics.class-ph]. Université de Toulon, 2021. English
Fluid mechanics [physics.class-ph]. Université de Toulon, 2021. English. ⟨NNT : 2021TOUL0022⟩
Flows in unsaturated porous media are modelled by the Richards' equation which is a degenerate parabolic nonlinear equation. Its limitations and the challenges raised by its numerical solution are laid out. Getting robust, accurate and cost-effective
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::1c9503b4ad2f33a15b5cb5f71a8f06f8
https://hal.archives-ouvertes.fr/tel-03121283
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6
Estimation a posteriori pour la simulation des grandes échelles en mécanique des fluides incompressibles
Autor: nassreddine, ghina
Publikováno v: Analyse numérique [math.NA]. Université Sorbonne Paris Nord, 2020. Français
The direct numerical simulation (DNS) at high Reynolds number of fluid behavior described by the Navier-Stokes equations is particularly costly, if not impossible, since the mesh cells and time step sizes must be adapted to the smallest scales of flu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2592::1b2b4e62edb9608a64f85c112379d015
https://tel.archives-ouvertes.fr/tel-03188260
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7
A posteriori error estimates for the large eddy simulation applied to in-compressible fluids
Autor: nassreddine, ghina
Publikováno v: Analyse numérique [math.NA]. Université Sorbonne Paris Nord, 2020. Français
The direct numerical simulation (DNS) at high Reynolds number of fluid behavior described by the Navier-Stokes equations is particularly costly, if not impossible, since the mesh cells and time step sizes must be adapted to the smallest scales of flu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______212::1b2b4e62edb9608a64f85c112379d015
https://tel.archives-ouvertes.fr/tel-03188260
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8
IGA/FEM coupling for the analysis of structural details by a non-intrusive and certified approach
Autor: Tirvaudey, Marie
Publikováno v: Mécanique [physics.med-ph]. INSA de Toulouse, 2019. Français. ⟨NNT : 2019ISAT0016⟩
In the current industrial context where the numerical simulation plays a major role, a large amount of tools are developed in order to perform accurate and effective simulations using as less numerical resources as possible. Among all these tools, th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::620f2e2f2411611bf494fefee02ccd63
https://tel.archives-ouvertes.fr/tel-02443232/file/2019MarieTIRVAUDEY.pdf
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9
On the use of isogeometric analysis in linear or nonlinear structural mechanics : certification of the simulations and coupling with PGD model reduction
Autor: Thai, Hoang Phuong
Publikováno v: Génie mécanique [physics.class-ph]. Université Paris-Saclay, 2019. Français. ⟨NNT : 2019SACLN017⟩
The topic of the PhD thesis deals with the construction of advanced numerical approaches for the simulation and optimization of mechanical structures with complex geometry. It focuses on the Isogeometric Analysis (IGA) technology which has received m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::97fab77448a643009fa60773be7324e3
https://tel.archives-ouvertes.fr/tel-02167983
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10
Estimations d’erreur a posteriori pour des inégalités variationnelles : application à un écoulement diphasique en milieu poreux
Autor: Dabaghi, Jad
Publikováno v: Numerical Analysis [math.NA]. Sorbonne Université, 2019. English. ⟨NNT : 2019SORUS076⟩
In this thesis, we consider variational inequalities in the form of partial differential equations with complementarity constraints. We construct a posteriori error estimates for discretizations using the finite element method and the finite volume m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6f10eadfc245b0448360732330f717bd
https://theses.hal.science/tel-02151951v2/document
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