Sierou, Asimina and Brady, John F. (2004) Shear-induced self-diffusion in non-colloidal suspensions. Journal of Fluid Mechanics, 506 . pp. 285-314. ISSN 0022-1120 http://resolver.caltech.edu/CaltechAUTHORS:SIEjfm04
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Self-diffusion in a monodisperse suspension of non-Brownian particles in simple shear flow is studied using accelerated Stokesian dynamics (ASD) simulation. The availability of a much faster computational algorithm allows the study of large systems (typically of 1000 particles) and the extraction of accurate results for the complete shear-induced self-diffusivity tensor. The finite, and often large, autocorrelation time requires the mean-square displacements to be followed for very long times, which is now possible with ASD. The self-diffusivities compare favourably with the available experimental measurements when allowance is made for the finite strains sampled in the experiments. The relationship between the mean-square displacements and the diffusivities appearing in a Fokker–Planck equation when advection couples to diffusion is discussed.
|Additional Information:||"Reprinted with the permission of Cambridge University Press." Received 9 August 2001 and in revised form 17 November 2003) Published online 28 April 2004 This work was supported in part by grant NAG8-1661 from NASA and by a Dow graduate fellowship to A. S. Access to an Alpha-based Beowulf cluster at the California Institute of Technology was provided by the Center for Advanced Computing Research. Discussions with G. Subramanian regarding the Fokker–Planck analysis were very helpful.|
|Subject Keywords:||DYNAMIC SIMULATION; DILUTE SUSPENSION; CONCENTRATED SUSPENSIONS; TRACER DIFFUSIVITIES; INDUCED PARTICLE; HARD-SPHERES; FLOW; MICROSTRUCTURE; BEHAVIOR; RHEOLOGY|
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|Deposited By:||Archive Administrator|
|Deposited On:||01 Feb 2006|
|Last Modified:||26 Dec 2012 08:45|
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