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Dynamics of Biomembranes: Effect of the BulkFluid

Published online by Cambridge University Press:  10 August 2011

A. Bonito*
Affiliation:
Department of Mathematics, Texas A&M University, College Station, Texas, USA
R.H. Nochetto
Affiliation:
Department of Mathematics, University of Maryland, College Park, Maryland, USA
M.S. Pauletti
Affiliation:
Department of Mathematics, Texas A&M University, College Station, Texas, USA
*
Corresponding author. E-mail: [email protected]
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Abstract

We derive a biomembrane model consisting of a fluid enclosed by a lipid membrane. Themembrane is characterized by its Canham-Helfrich energy (Willmore energy with areaconstraint) and acts as a boundary force on the Navier-Stokes system modeling anincompressible fluid. We give a concise description of the model and of the associatednumerical scheme. We provide numerical simulations with emphasis on the comparisonsbetween different types of flow: the geometric model which does not take into account thebulk fluid and the biomembrane model for two different regimes of parameters.

Type
Research Article
Copyright
© EDP Sciences, 2011

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