Shape changes and motion of a vesicle in a fluid using a lattice Boltzmann modelH. B. Li1, 2, H. H. Yi1, 3, X. W. Shan4 and H. P. Fang1
1 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
received 22 August 2007; accepted in final form 8 January 2008; published March 2008
published online 4 February 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.
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