| Abstract: | The state of a gas near a permeable nonisothermal body with ultrathin pores, that is, pores in which the motion of molecules
is not accompanied by intermolecular collisions, is studied. A boundary layer of a new type, namely, the quasiequilibrium
Knudsen boundary layer on the porous body surface, is investigated. It is formed on condition that within the body there is
a heat flux, even when the body is in an equilibrium gas. The statistical methods for solving the Boltzmann equation are used
to determine the temperature and pressure jumps across the Knudsen layer near thin perforated and porous membranes. |
