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Simulation method to resolve hydrodynamic interactions in colloidal dispersions

Yasuya Nakayama1,* and Ryoichi Yamamoto1,2

  • 1PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
  • 2Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan

  • *Electronic address: nakayama@cheme.kyoto-u.ac.jp
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Phys. Rev. E 71, 036707 – Published 25 March, 2005

DOI: https://doi.org/10.1103/PhysRevE.71.036707

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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Phys. Rev. E 71, 036707– Published 25 March, 2005
  • Received 2 March 2004

© 2005 American Physical Society

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