Mathematical modeling rarefied gas flow in a rectangular channel with an inner cylindrical element

摘要

The article proposes method of solving the problem of heatand mass transfer in a long rectangular channel with an inner cylindricalelement. A rarefied gas flow trough cross section is studied on the basisof kinetic equation in the free molecular. Diffuse reflection model for theboundary condition at the channel walls is used. The expression for themass flux is obtained as a linear function of a pressure gradient supportedin the channel.