Experimental Verification of Departure from-Rankine- Hugoniot Behaviour in Weak Mach Reflection
Siegenthaler, Alfred & Madhani, Jehangir T. (1998) Experimental Verification of Departure from-Rankine- Hugoniot Behaviour in Weak Mach Reflection. In 13th Australasian Fluid Mechanics Conference, 13-18 December 1998, Monash University, Melbourne, Australia.
Abstract
Stagnation temperature traverses were performed in the supersonic wind tunnel behind the reflected shock wave of WMR. This had been suggested, among other obser-vations, by some earlier puzzling results from shock tube experiments. The present findings substantially confirm the hypothesis that the reflected shock undergoes a transformation which produces a departure from RH behaviour. This anomaly is found to result in a small drop of stagnation enthalpy across the reflected wave. This mechanism raises the r-wave’s ailing streamline deflecting capacity. The effect goes on increasing past RR till the conditions for onset of WMR can be satisfied.
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