DYNAMICS OF BIOLOGICAL CELLS IN SHEAR FLOWS USING AN IMPLICIT FLUID-STRUCTURE INTERACTION METHOD BASED ON THE ALE APPROACH

摘要

We develop a fluid-structure interaction (FSI) method based on the ALE method and a dynamic mesh method with an ultimate aim which is to simulate the complicated dynamics of rigid particles in shear flow and to investigate the rheological behavior of the suspension. Because the motion of the fluid and particles in fluid-particle suspension problems is strongly linked, the governing equations are sequentially solved in each solver and the computation is iterated until the solutions converge in a two-way coupling fashion. The mesh system initially designed is deformed or re-meshed in accordance with the moving particles by a dynamic mesh method. Numerical simulation is entirely implemented by our FSI code in the framework of FLUENT. The present simulations have demonstrated the capability of the developed FSI method in simulating the dynamics of single and multiple particles with different arbitrary shapes in shear flows.