Portal de Periódicos da CAPES

Numerical study of high enthalpy flow in a plasma wind tunnel

1991; Elsevier BV; Volume: 89; Issue: 1-3 Linguagem: Inglês

10.1016/0045-7825(91)90052-8

1879-2138

T. Gogel, Monika Auweter‐Kurtz, Thomas Golz, Ernst Messerschmid, H. O. Schrade, P. C. Sleziona,

Ionosphere and magnetosphere dynamics

Abstract For the investigation of the flow field in the test chambers of the plasma wind tunnels existing at the Institut fur Raumfahrtsysteme (IRS) a two-dimensional, axisymmetric program system has been developed. This code is employed to examine the flow features in the test section of the wind tunnel PWK2 of the IRS. The program system consists of a Navier-Stokes flowfield solver, a solution program of the electron energy equation yielding the electron temperature and a code for the evaluation of the species conservation equations. For the latter a suitable two temperature model for the source term was utilized. The flow field is calculated for chemical non-equilibrium. A first step towards thermal non-equilibrium is taken by distinguishing between the heavy particle translational temperature, assumed to be equal to the rotational temperature, and the electron temperature, taken identical with the vibrational temperature. The program system was used for the investigation of an expanding flow into the vacuum section of the test chamber. Considered was partly ionized nitrogen in chemical non-equilibrium with a mass flow rate of 2 g/s.