Tracer diffusion in shear flow
- 1 July 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 44 (2) , 1397-1400
- https://doi.org/10.1103/physreva.44.1397
Abstract
The Boltzmann-Lorentz equation for Maxwell molecules is used to study tracer diffusion in uniform shear flow. It is shown that some values of the mass ratio may prevent the establishment of a hydrodynamic regime. In the region where a hydrodynamic solution exists, a diffusion tensor has been derived by considering terms up to first order in the tracer concentration gradient. This tensor is a highly nonlinear function of both the shear rate and the mass ratio. A comparison with earlier results has been performed.Keywords
This publication has 6 references indexed in Scilit:
- Influence of nonconservative external forces on self-diffusion in dilute gasesPhysica A: Statistical Mechanics and its Applications, 1990
- Chapman-Enskog velocity distribution for tracer diffusionJournal of Statistical Physics, 1989
- Diffusion in shear flowPhysical Review A, 1984
- The Enskog theory for multicomponent mixtures. III. Transport properties of dense binary mixtures with one tracer componentThe Journal of Chemical Physics, 1984
- Fokker-Planck and Langevin descriptions of fluctuations in uniform shear flowJournal of Statistical Physics, 1983
- Tagged particle fluctuations in uniform shear flowJournal of Statistical Physics, 1983