Simulation of two-fluid flows using a Finite Element/level set method. Application to bubbles and vesicle dynamics
Résumé
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.
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ls_jcam.pdf (771.21 Ko)
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Tank_treading_streamlines.png (350.84 Ko)
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ManyFallingDrops.avi (10.05 Mo)
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