Numerical analysis of strong evaporation–condensation through the porous matter

Evaporation–condensation problem in the presence of porous body is investigated. The velocity distribution function of molecules is found from the direct numerical solution of the Boltzmann kinetic equation. New approach for calculation of the distribution function transformation as a result of gas molecules and porous body particles interactions is presented. The data of known theoretical and experimental works are compared with authorsʹ results. Various approaches for the porous body description are discussed.