Abstract

A binary mixture of rarefied gases between two parallel plates is considered. The Poiseuille flow, the thermal transpiration, and a flow caused by a concentration gradient of a component gas along the plates are investigated on the basis of the linearized Boltzmann equation for hard‐sphere gases with the diffuse reflection boundary condition. Accurate numerical analyses are performed by means of a finite‐difference method, in which the complicated collision integrals are computed efficiently by the numerical kernel method. As a result, the behavior of the mixture is clarified at the level of the velocity distribution functions as well as the macroscopic quantities for a wide range of the Knudsen number.

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