Brownian dynamics simulation for suspensions of oblong-particles under shear flow |
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Authors: | Mori N. Kumagae Masaki Nakamura Kiyoji |
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Affiliation: | (1) Department of Mechanophysics Engineering Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565 Japan, JP |
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Abstract: | Computer simulations of the shear flow for the suspensions of oblong-particles were performed using nonequilibrium Brownian Dynamics (BD). The model particle is a rigid body made up of linearly connected spheres with the interparticle potential of a repulsive Lennard-Jones potential. The length-over-width ratios of the oblong-particles used in the present calculations are 5/3 and 3. In the concentrated suspensions high orientation is easily induced by shear at low shear rates. The systems of the oblong-particles exhibit the structural transition that causes the significant change in the rheological properties at high shear rates. Furthermore, the dependence of the length-over-width ratio of the particle is examined. Received: 16 June 1997 Accepted: 3 February 1998 |
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Keywords: | Brownian Dynamics suspension oblong-particle repulsive Lennard-Jones potential steady shear flow rheological properties |
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