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.
|Title of host publication||JM Burgers Centrum, 15-year anniversary book|
|Editors||G. Ooms, C.J. Hoogendoorn|
|Place of Publication||Delft|
|Number of pages||2|
|Publication status||Published - 2007|
Garcia-Rojo, R., Luding, S., & Brey, J. J. (2007). Transport Coefficients for dense hard-disk systems. In G. Ooms, & C. J. Hoogendoorn (Eds.), JM Burgers Centrum, 15-year anniversary book (pp. 316-317). Delft: J.M. Burgerscentrum.