Volume 81, Number 5, March 2008
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||04 February 2008|
Shape changes and motion of a vesicle in a fluid using a lattice Boltzmann model
Shanghai Institute of Applied Physics, Chinese Academy of Sciences - P.O. Box 800-204, Shanghai 201800, China
2 Department of information material science and engineering, Guilin University of Electronic Technology Guilin 541004, China
3 Graduate School of the Chinese Academy of Sciences - Beijing 100080, China
4 EXA Corporation - 3 Burlington Woods Drive, Burlington, MA 01803, USA
Accepted: 8 January 2008
To study erythrocyte deformation and movement in fluid flows, the membrane bending rigidity and elastic modulus are incorporated with a lattice Boltzmann simulation. The stable static biconcave shape is found to resist pathological membrane changes, and the erythrocyte exhibits tank tread-like motion with a highly flattened shape in a shear flow. With intrinsically parallel dynamics, this lattice Boltzmann method may apply to both single and multi-vesicle suspension and complex open membranes in various fluid flows for a wide range of Reynolds numbers.
PACS: 47.11.-j – Computational methods in fluid dynamics / 82.70.-y – Disperse systems; complex fluids / 47.10.-g – General theory in fluid dynamics
© EPLA, 2008
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