This study has evaluated the penetration of gas jets into supersonic flows with boundary layers over various Mach numbers. Comparison with previous studies shows the following: 1) Transverse jet penetration is primarily dependent on q_r and, to a lesser degree, on the boundary-layer thickness and air Mach number. 2) The effect of molecular weight ratio on penetration is small and the effect of Reynolds number is negligible. 3) Increased air Mach number results in increased penetration due to greater effective dynamic pressure ratio at the injection location, a result of stronger bow shock generation. 4) The effect of the boundary-layer thickness on near-field jet penetration is significant at low supersonic Mach numbers but decreases with increased Mach number. 5) A new penetration correlation is proposed that incorporates air Mach number dependence and removes the discrepancies between several existing formulas. The air Mach number is used as an independent variable in the coefficients that determine the effects of selected parameters on jet penetration.
展开▼
