Title: Simulation of multi-particle suspensions in a quasi-two-dimensional symmetric stenotic artery with Lattice Boltzmann method

Authors: Hua-bing Li, Xiao-yang Lu, Hai-ping Fang, Zhi-fang Lin

Addresses: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800, and Surface Laboratory and Department of Physics, Fudan University, Shanghai 200433, China. Department of Computational Science and Applied Physics, Guilin University of Electronic Technology, Guilin 541004, China ' Surface Laboratory and Department of Physics, Fudan University, Shanghai 200433, China. ' Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800, China. ' Surface Laboratory and Department of Physics, Fudan University, Shanghai 200433, China

Abstract: The three-dimensional Lattice Boltzmann model has been applied to the study of rigid particle suspensions through a quasi-two-dimensional modelled arterial stenosis. Only when two particles are positioned symmetrically to the centerline to an extremely high accuracy, the particles can be blocked completely at the stenosis throat. Particles incline to gather near the centerline for a stenosis throat width b < 2d, consistent with the observation that red blood cells tend to concentrate near the center of the vessel. The present study shows that the quasi-two-dimensional system is an effective model to study the behaviour of three-dimensional multi-particle suspension in stenotic arteries.

Keywords: Lattice Boltzmann method; Lattice Boltzmann model; multi-particle suspensions; numerical simulation; stenotic artery; blood flow.

DOI: 10.1504/PCFD.2005.005818

Progress in Computational Fluid Dynamics, An International Journal, 2005 Vol.5 No.1/2, pp.65 - 74

Published online: 08 Dec 2004 *

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