Simulation method to resolve hydrodynamic interactions in colloidal dispersions.

Y. Nakayama,R. Yamamoto

Published 2004 in Physical review. E, Statistical, nonlinear, and soft matter physics

ABSTRACT

A computational method is presented to resolve hydrodynamic interactions acting on solid particles immersed in incompressible host fluids. In this method, boundaries between solid particles and host fluids are replaced with a continuous interface by assuming a smoothed profile. This enabled us to calculate hydrodynamic interactions both efficiently and accurately, without neglecting many-body interactions. The validity of the method was tested by calculating the drag force acting on a single cylindrical rod moving in an incompressible Newtonian fluid. This method was then applied in order to simulate sedimentation process of colloidal dispersions.

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