Journal of Guangxi Normal University(Natural Science Edition) ›› 2011, Vol. 29 ›› Issue (4): 7-11.

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Kinetics Characteristic Transitionof Suspended Particle in a Pulsating Flow in Microvessel by Lattice Boltzmann Simulation

QIU Bing, WANG Li-long, XUE Ze, LI Hua-bing   

  1. School of Material Science and Engineering,Guilin University of Electronic Technology,Guilin Guangxi 541004,China
  • Received:2011-07-02 Published:2018-11-16

Abstract: A lattice Boltzmann model of two-dimensions is usedto simulate the movement of rigid suspended particle in a pulsating flow in micro vessel.The particle is as big as a red blood cell,and the micro vessel is four times as wide as the diameter of the particle.The plasma is viewed as Newtonian flow,and the hydrodynamic force is calculated by integrating the stress tensoron the boundary of it.It is found that Segré-Silberberg effect does not present when the flow velocity is on the same level with human blood,and it only presents when the flow velocity is increased to a rather high level.During the increase of flow velocity,the change of equilibrium position is seen to be not continuous but discrete,showing differen from the characteristic of the drift in macroflow,which reveals the dynamics transition from micro flow to macro flow.

Key words: lattice Boltzmann method, pulsating flow, microvessel, Segré-Silberberg effect

CLC Number: 

  • O540
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