inria-00336177, version 1
Improvement of Reduced Order Modeling based on Proper Orthogonal Decomposition
Michel Bergmann
1, 2Charles-Henri Bruneau 1, 2Angelo Iollo
1, 2
The Fifth International Conference on Computational Fluid Dynamics (2008)
Résumé : This study focuses on stabilizing Reduced Order Model based on Proper Orthogonal Decomposition (POD) and on improving the POD functional subspace. A modified reduced order model (ROM) that incorporates directly the pressure term is proposed. The ROM is obtained by seeking a solution that lives in the POD subspace and at the same time minimizes the Navier-Stokes residuals. Both ROM stabilization and POD subspace adaptation make use of methods based on the fine scale equation that is approximated using the residuals of the Navier-Sokes equations. Results are shown for the 2D confined cylinder wake flow.
- 1 : Institut de Mathématiques de Bordeaux (IMB)
- CNRS : UMR5251 – Université Sciences et Technologies - Bordeaux I – Université Victor Segalen - Bordeaux II
- 2 : MC2 (INRIA Bordeaux - Sud-Ouest)
- INRIA – Université Sciences et Technologies - Bordeaux I – Université Victor Segalen - Bordeaux II – CNRS : UMR
- Domaine : Physique/Mécanique/Mécanique des fluides
Informatique/Modélisation et simulation - Mots-clés : Proper Orthogonal Decomposition – Reduced Order Model – Stabilization – Functional space adaptation
- inria-00336177, version 1
- http://hal.inria.fr/inria-00336177
- oai:hal.inria.fr:inria-00336177
- Contributeur : Michel Bergmann
- Soumis le : Lundi 3 Novembre 2008, 10:11:42
- Dernière modification le : Lundi 3 Novembre 2008, 15:44:09
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