First investigations were made using nitrogen as flow medium in the plasma wind tunnel. The operation parameters were chosen to represent the stagnation region parameters as encountered at the wing leading edge of a HERMES type reentry vehicle at the peak heating trajectory point. Using these experimental results for a free jet in the facility, the code system was validated. Therefore, finite rate chemistry, thermal non-equilibrium effects and turbulence effects were investigated, all of these being implemented in the code system. The results were compared to a straightforward theory for turbulent free jets with good agreement. Thus, a simple and fast prediction procedure and a more accurate computational fluid dynamic (CFD) code system to compute the fine structure of the plasma wind tunnel flow-field were developed. The basic features of these methods, the results obtained for a nitrogen jet and the comparison to experimental data are presented here.
Numerical modeling of plasma wind tunnel flows
Numerische Modellierung von Strömungen im Plasmawindkanal
Zeitschrift für Flugwissenschaften und Weltraumforschung ; 19 , 3 ; 158-165
1995
8 Seiten, 8 Bilder, 27 Quellen
Aufsatz (Zeitschrift)
Englisch
Windkanal , Plasmaströmung , Wärmeschutz , Hitzeschild , Raumfähre , Wiedereintritt , Staupunkt , Tragflügel , Bahnkurve , Freistrahl , Software , mathematisches Modell , Navier-Stokes-Gleichung , Differenzialgleichung , Vektor , turbulente Strömung , Temperaturverteilung , Strömungsvorgang , Stickstoff , Enthalpie , Wärmestrom , chemische Reaktion , Iteration , Vergleichsmessung , Strömungsgeschwindigkeitsmessung
Numerical modeling of plasma wind tunnel flows
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