Stability Theory for Chemically Reacting Flows
Linear stability theory for chemically reacting (equilibrium and nonequilibrium) flows is presented. The theory is then applied to study the stability of hypersonic boundary layers under equilibrium assumption. The results for Mach 15 flow indicate that the second mode instability shifts to lower frequencies as compared to the perfect gas results. The peak second mode growth rate is also increased for the equilibrium gas model. However, the results for Görtler instability show very little effect of real gas. The present theory has been applied to a sphere-cone flight transition experiment performed at M ∞ ≈ 20.
KeywordsMach Number Hypersonic Flow Linear Stability Theory High Mach Number Hypersonic Boundary Layer
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