Transport coefficients for dense hard-disk systems


Garcia-Rojo, R. and Luding, S. and Brey, J. Javier (2007) Transport coefficients for dense hard-disk systems. In: G. Ooms & C.J. Hoogendoorn (Eds.), JMBC 15 years : 1992-2007 : JM Burgers centre Research School for Fluid Mechanics. J.M. Burgerscentrum, Delft, the Netherlands, pp. 316-317.

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Abstract:A study of the transport coefficients of a system of elastic hard disks, based on the use of Helfand-Einstein expressions is reported. The pressure, the viscosity, and the heat conductivity are examined for different density and system-size. While most transport coefficients agree with Enskog theory below the disorder-order transition, a striking power law divergence of the viscosity with density is obtained at this density. The other transport coefficients show a drop in that density regime, relative to the Enskog theoretical prediction. The deviations are related to shear band instabilities and the contept of dilatancy.
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