Lateral Migration and Nonuniform Rotation of Biconcave Particle Suspended inPoiseuille Flow

作     者：WEN Bing-Hai CHEN Yan-Yan ZHANG Ren-Liang ZHANG Chao-Ying FANG Hai-Ping 闻炳海;陈艳燕;张任良;张超英;方海平

作者机构：Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800 University of Chinese Academy of SciencesBeijing 100049 College of Computer Science and Information EngineeringGuangxi Normal UniversityGuilin 541004 Department of PhysicsZhejiang Normal UniversityJinhua 321004 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2013年第30卷第6期

页      面：114-117页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10825520 and 11162002 the National Basic Research Program of China under Grant No 2012CB932400 

主　　题：flow. concave positions 

摘      要：A biconcave particle suspended in a Poiseuille flow is investigated by the multiple-relaxation-time lattice Boltzmann method with the Galilean-invariant momentum exchange *** lateral migration and equilibrium of the particle are similar to the Segré-Silberberg effect in our numerical ***,two lateral equilibrium positions are observed corresponding to the releasing positions of the biconcave *** upper equilibrium positions significantly decrease with the increasing Reynolds number,whereas the lower ones are almost insensitive to the Reynolds ***,the regular wave accompanied by nonuniform rotation is exhibited in the lateral movement of the biconcave *** can be attributed to the fact that the biconcave shape in various postures interacts with the parabolic velocity distribution of the Poiseuille flow.A set of contours illustrate the dynamic flow field when the biconcave particle has successive postures in a rotating period.