Transactions of Nanjing University of Aeronautics & Astronautics
Effects of Chemical Reactions in the Hypersonic Reacting Flow around Blunt Bodies
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Abstract:
The effects of chemical reactions in the hypersonic reacting flow are investigated using an integrated algorithm considering simultaneously two different reaction mechanisms, i.e., including the high temperature air non-equilibrium chemical reactions and the H2-air combustion reactions. The program is validated by the air non-equilibrium flow at Mach number of 25.9 with the RAM C-II configuration and the shock-induced combustion flow at Mach number of 4.512 6 around a sphere, respectively. Furthermore, the mixed reacting flow with the Mach number of 10.0 with an opposing jet of hydrogen is numerically analyzed. The results show that the program is reliable, and the effects of chemical reactions engender in the decrease of peak temperature along characteristic lines, as well as on the surface. The production of water is augmented in the region with high ratio of oxygen to hydrogen and weakened in the area with low ratio of oxygen to hydrogen by the air chemical non-equilibrium effects.
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Clc Number:
V211.3
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