NUMERICAL INVESTIGATION OF THE EVOLUTION OF DISTURBANCES ON A FLAT PLATE IN A HYPERSONIC FLOW OF A MIXTURE OF VIBRATIONALLY EXCITED GASES

The problem of the evolution of disturbances in a hypersonic viscous shock layer on a plate in the flow of a mixture of vibrationally excited carbon dioxide and nitrogen is considered by solving of the Navier – Stokes equations. Two channels of vibrational relaxation of CO₂ molecules in collisions with CO₂ and in collisions with N₂ were taken into account by using a two-temperature model of relaxation flows in modeling the thermal nonequilibrium. The data on the dynamics of the evolution of disturbances on f flat plate in a wide range of determining parameters (attack angle α = 5÷20°, concentration of CO₂ in mixture, braking temperature T₀ = 2000÷4000 K) are presented in this paper.

Keywords:
hypersonic flows, vibrational relaxation, numerical simulation.
УДК 533.536

NUMERICAL INVESTIGATION OF THE EVOLUTION OF DISTURBANCES ON A FLAT PLATE IN A HYPERSONIC FLOW OF A MIXTURE OF VIBRATIONALLY EXCITED GASES