| Abstract: | Macroscopic equations obtained as a thin-layer version of the 13-moment Grad equations derived from kinetic considerations
are used for describing the translationally nonequilibrium monatomic gas flow in a hypersonic free jet boundary layer formed
in the wake behind a wedge. This model makes it possible to investigate flows with strong violations of equilibrium with respect
to the translational degrees of freedom. A method of constructing the solution of this kinetically justified problem based
on the solution of an analogous problem in the Navier-Stokes interpretation is proposed. It is established that for the kinetic
variant of the problem considered the gas flow velocity distribution along the separating streamline in a plane orthogonal
to the wedge generator coincides with the distribution obtained in solving the Navier-Stokes variant. It is found that taking
into account the nonequilibrium nature of the flow with respect to the translational degrees of freedom of the gas particles
has no effect on the base pressure and the wake angle. |
