## Numerical study of nonequilibrium high-enthalpy separated flows near double cone and wedge

Numerical simulation of separated flows near double cone and wedge is performed in order to validate different models of translational-vibrational relaxation and dissociation models. Two cases are considered.
1. High-speed (u=2073 m/sec) thermally non-equilibrium axisymmetric flow of molecular nitrogen N2 at low total enthalpy around double cone. Translational-rotational temperature if free-stream is 42.6 K and vibrational temperature is 1986 K.
2. high-enthalpy (u=6110 m/sec) thermally and chemically non-equilibrium planar flow of binary nitrogen mixture N2/N near double wedge. Translational-rotational temperature if free-stream is 1888 K and vibrational temperature is 3856 K.
The computations are performed by two principally different approaches: kinetic and continuum. Kinetic simulations are performed with direct simulation Monte Carlo method using Larsen-Borgnakke model for description of thermal non-equilibrium and total collision energy model for dissociation. Continuum modeling is performed by numerical solution of Navier—Stokes equations in two-temperature approximation using Landau—Teller model (and its generalization from the kinetic theory) for computing translational-vibrational relaxation and Marrone—Treanor, Macheret—Fridman, Kuznetsov, Park and Losev models for dissociation.
Numerical results obtained in continuum and kinetic modeling are compared with each other. Numerical results are compared with experimental measurements of pressure and heat flux on the double cone/wedge surface. A full-length papers will show the results in detail.

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