Supersonic condensation of molecular gas

The kinetic problem on supersonic condensation of polyatomic gas on a flat surface is solved by the Mott-Smith method. The suggested model assumes a possibility of existence of a solution of the shock wave type. The contribution of the internal degrees of freedom to the total heat capacity of gas is included. The regions of permissible values of parameters characterizing the state of gas behind the Knudsen layer are determined by this method for the cases of monatomic, diatomic, and triatomic gases.