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The laminar near-wake flow behind a circular cylinder at hypersonic speeds has been examined experimentally and analytically. Surface pressure and heat flux measurements were obtained in a free-piston shock tunnel at a nominal Mach number of 10. The freestream unit Reynolds numbers were 3.02 x 10 5 /m and 11.7 x 10 5 /m at total specific enthalpies of 13.35 and 3.94 MJ/kg, respectively. The experimental data of surface pressure and heat flux showed good agreement with theory based on perfect gas

This paper presents experimental and theoretical results on catalytic phenomenon occurring in a test gas consisting of a mixture of 21% oxygen and 79% argon. The heat-transfer rates at the stagnation point of a blunt body are measured in a shock tube using a thin-film gauge. The surface of the test model was coated with silicon dioxide, copper oxide, or copper. The copper-coated model showed a heat-transfer-rate value 45% higher than that to a silicon-dioxide-coated model and 28% higher than tha

The paper presents a computational and an experimental investigation of base flow of a circular cylinder at hypersonic speeds. Effects of chemistry and wall temperature on the flow in the base region, at low to high enthalpies, are discussed. The experiments were conducted in a shock tunnel at a nominal Mach number of 10. Freestream Reynolds numbers based on cylinder diameter were and , respectively, and the total specific enthalpies were 13.35 and , respectively. The test gas was air. The surfa

Flowfield and flame-holding characteristics of ethylene jets were examined experimentally. Flow visualization and chemiluminescence images were obtained in a shock tunnel. Model configurations with and without a cowl or a cavity were tested for jet-to-freestream momentum flux ratios varying from 1.35 to 3.07. Flame-holding characteristics were studied using a cavity configuration with a cowl. Four flow conditions with the total temperature varying from 1610 to 2320 K were studied keeping the ove