We propose a new adaptive algorithm for multiscale simulations of non-Newtonian fluids. Using a posteriori error indicators, the method can switch dynamically at each timestep between a rough (macroscopic) and a detailed (microscopic) model in each cell of the mesh. The validity of the approach is tested on a plane shear flow for the FENE model of polymeric fluids.
Nous proposons un nouvel algorithme adaptatif pour la simulation multi-échelles de fluides non-newtoniens. Le principe est d'utiliser soit un modèle simple (macroscopique) soit un modèle plus détaillé (microscopique) dans chaque maille, le choix étant effectué de manière dynamique à chaque pas de temps sur la base d'indicateurs d'erreur a posteriori. Des tests sur un écoulement cisaillé pour le modèle FENE de fluides polymériques démontrent l'intérêt de l'approche.
Accepted:
Published online:
Alexandre Ern 1; Tony Lelièvre 1
@article{CRMATH_2007__344_7_473_0,
author = {Alexandre Ern and Tony Leli\`evre},
title = {Adaptive models for polymeric fluid flow simulation},
journal = {Comptes Rendus. Math\'ematique},
pages = {473--476},
year = {2007},
publisher = {Elsevier},
volume = {344},
number = {7},
doi = {10.1016/j.crma.2007.02.013},
language = {en},
}
Alexandre Ern; Tony Lelièvre. Adaptive models for polymeric fluid flow simulation. Comptes Rendus. Mathématique, Volume 344 (2007) no. 7, pp. 473-476. doi: 10.1016/j.crma.2007.02.013
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