Using a finite volume code, the Navier-Stokes equations are solved for a series of flows around spherically blunted cones. These solutions an used to perform linear-stability analyses to determine the growth of second-mode disturbances. Two cases are investigated: the Stetson experiment and a recent experiment conducted at the Institute of Theoretical and Applied Mechanics in Russia. Comparisons are made for both basic-state and disturbance-state quantities. For both cases, linear-growth regions are identified. For the Stetson case, using an experimentally determined wall-temperature distribution for the basic state appears to give better agreement with the experimentally measured growth than does the classical adiabatic-wall boundary condition. For the Institute of Theoretical and Applied Mechanics case, initial comparisons are made, and the goal is to continue a careful collaboration.
Numerical-experimental comparisons of second-mode behavior for blunted cones
Instabilität zweiter Art bei der Umströmung abgerundeter konischer Körper: Vergleich numerischer Simulationen mit Experimenten
AIAA Journal ; 43 , 8 ; 1734-1743
2005
10 Seiten, 18 Bilder, 6 Tabellen, 18 Quellen
Article (Journal)
English
Grenzschichtströmung , Hyperschallströmung , Konus , numerische Strömungssimulation , numerisches Verfahren , Schwingungsspektrum , Störungstheorie , Strömung an Rotationskörpern , Strömungsinstabilität , Temperaturfluktuation , Temperaturverteilung , Theorie-Experiment-Vergleich , Turbulenz , Wandtemperatur , Windkanalprüfung , Abrundung (Fase)
FLUID DYNAMICS - Numerical-Experimental Comparisons of Second-Mode Behavior for Blunted Cones
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