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Simulation of two-fluid flows using a Finite Element/level set method. Application to bubbles and vesicle dynamics
Vincent Doyeux 1, Yann Guyot 1, Vincent Chabannes 2, Christophe Prud'Homme 2, 3, Mourad Ismail ( ) 1
(31/01/2012)

A new framework for two-fluids flow using a Finite Element/Level Set method is presented and verified through the simulation of the rising of a bubble in a viscous fluid. This model is then enriched to deal with vesicles (which mimic red blood cells mechanical behavior) by introducing a Lagrange multiplier to constrain the inextensibility of the membrane. Moreover, high order polynomial approximation is used to increase the accuracy of the simulations. A validation of this model is finally presented on known behaviors of vesicles under flow such as "tank treading" and tumbling motions.
1 :  Laboratoire Interdisciplinaire de Physique (LIPhy)
CNRS : UMR5588 – Université Joseph Fourier - Grenoble I
2 :  Laboratoire Jean Kuntzmann (LJK)
CNRS : UMR5224 – Université Joseph Fourier - Grenoble I – Université Pierre Mendès-France - Grenoble II – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
3 :  Institut de Recherche Mathématique Avancée (IRMA)
CNRS : UMR7501 – Université de Strasbourg
DYFCOM, EDP/DYFCOM, EDP
Informatique/Modélisation et simulation

Mathématiques/Analyse numérique

Physique/Physique/Dynamique des Fluides
vesicle membrane – Navier-Stokes Equations – two-fluid flows – Finite Eements – High Order Level Set
Liste des fichiers attachés à ce document : 
PDF
ls_jcam.pdf(869.9 KB)
VIDEO
ManyFallingDrops.avi(10.1 MB)
IMG
Tank_treading_streamlines.png(350.8 KB)