Non-Spheric Colloidal Suspensions in Three-Dimensional Space

Dewei Qi ()
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Dewei Qi: Department of Paper and Print Science and Engineering, Western Michigan University, Kalamazoo, MI 49008-3843, USA

International Journal of Modern Physics C (IJMPC), 1997, vol. 08, issue 04, 985-997

Abstract: The translation and rotation of non-spherical particles, such as ellipsoidal, cylindric or disk-like pigment particles, in a Couette flow system similar to a blade coating system in the paper industry6have been successfully simulated by using the lattice-Boltzmann method combined with Newtonian dynamic simulations. Hydrodynamic forces and torques are obtained by the use of boundary conditions which match the moving surface of solid particles. Then Euler equations have been integrated to include three-dimensional rotations of the suspensions by using four quaternion parameters as generalized coordinates. The three-dimensional rotations have been clearly observed. Consequently, the motion of the particles suspended in fluids of both low-Reynolds-number and finite-Reynolds-number, up to several hundreds, has been studied. It appears that the 3D translation and rotation of the non-spherical particles are more clearly observed in a high-Reynolds-number fluid than in a low-Reynolds-number fluid.

Keywords: Solid Suspension; Colloidal Non-Spheric Particles; Moving Boundary Condition; 3D Rotation (search for similar items in EconPapers)
Date: 1997
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DOI: 10.1142/S0129183197000850

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