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Brownian-dynamics simulation studies of a charge-stabilized colloidal suspension under shear flow.

Chakrabarti, J and Sood, AK and Krishnamurthy, HR (1994) Brownian-dynamics simulation studies of a charge-stabilized colloidal suspension under shear flow. In: Physical Review E, 50 (5). pp. 3326-3329.

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Abstract

We have carried out Brownian-dynamics simulations of a charged colloidal suspension under oscillatory shear flow with both Couette and Poiseuille velocity profiles. We show that in the "steady-shear" limit, for both of the velocity profiles, the enhancement of the self-diffusion coefficient in directions transverse to the flow shows a crossover from a $\dot\gamma^2$ dependence to a $\dot\gamma^{1/2}$ dependence as the shear rate $\dot\gamma$ increases. The magnitude of the enhancement is a function of the interparticle interaction strength. There is a layering tendency in the direction of the velocity gradient for Couette flow, while such a tendency is not that prominent for Poiseuille flow.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Institute Of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 23 Jun 2007
Last Modified: 19 Sep 2010 04:30
URI: http://eprints.iisc.ernet.in/id/eprint/8236

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