%0 Journal Article
%T Navier-Stokes computation of some gas mixture problemsin the slip flow regime
%J Scientia Iranica
%I Sharif University of Technology
%Z 1026-3098
%A Zahmatkesh, Iman
%A Emdad, Homayoun
%A Alishahi, Mohammad Mehdi
%D 2015
%\ 02/01/2015
%V 22
%N 1
%P 187-195
%! Navier-Stokes computation of some gas mixture problemsin the slip flow regime
%K Gas mixture
%K Rarefied flow
%K Slip flow regime
%K Navier-Stokes equations
%K Nozzle
%K microchannel
%R
%X Several kinetic descriptions have already been utilized for the simulation of rarefied gas mixture flows. Although such developments are important, Navier-Stokes computation can find extended use in engineering applications. Recently, the authors have derived new velocity-slip and temperature-jump boundary conditions for slip flows of gas mixtures. Appealing to these new boundary conditions, Navier-Stokes computation of rarefied gas mixture problems has become feasible.In the present contribution, the proposed conditions in conjunction with the Navier-Stokes equations and an equation for the conservation of species are solved for some binary gas mixture problems in the slip flow regime. Applications include low pressure flow in a converging-diverging nozzle, wall-cooling of a nozzle under rarefied condition, and parallel mixing in a microchannel. Simulation results are presented in terms of the distributions of overall Knudsen number, Mach number, pressure, temperature, and concentration.
%U https://scientiairanica.sharif.edu/article_3645_7c763b2e095e0c262646e05f51cf349e.pdf