Gas dynamic boundary conditions for evaporation processes

On the basis of exact mathematical theory, the gas-dynamic description in closed form for slow flows at moderately strong heterogeneous processes of evaporation-condensation was obtained.The theory is based upon strict representation of Kramer's boundary kinetic problem and linearized collision integral. The task of finding of the coefficients in boundary condition is reduced to solving a set of integral equations with slight singularity in semi-infinity area. The numerical solution of this problem is obtained on the basis of quadrature procedure.