Tracer diffusion under heat and momentum transport for general repulsive potentials

V. Garzó

Physica A: Statistical Mechanics and its Applications, 1996, vol. 234, issue 1, 108-128

Abstract: Tracer diffusion in a steady state with both velocity and temperature gradients is analyzed. The results are obtained from a kinetic model that incorporates a temperature dependence in the collision frequencies. This allows for the consideration of general r−1-repulsive interactions. An explicit expression of the tracer diffusion tensor is obtained in terms of the shear rate, the mass ratio, the force constant ratio and a parameter characterizing the interaction model considered. This expression extends previous results derived in the case of Maxwell molecules (l = 5).

Keywords: Tracer limit; Kinetic model; Mutual diffusion tensor; Nonlinear transport; Repulsive interactions (search for similar items in EconPapers)
Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:234:y:1996:i:1:p:108-128

DOI: 10.1016/S0378-4371(96)00291-9

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