In order to examine the supersonic mixing process in a high enthalpy supersonic flow, the shock tunnel using the quickaction valves has been developed and confirmed their operation. The present shock tunnel enables to make a high enthaply flow without contamination in high reproducibility by easy operation. The nozzle is designed to make parallel supersonic flows which are comprised of high-enthalpy air stream and Helium stream. Mach number of air and Helium flow are 3.4 and 4.2,respectively. The structure of mixing region of parallel supersonic flows thus obtained was examined by means of the mass sampline probe which enables one to examine directly the concentration ratio of the mixture gases. The measurement shows that the mixing region prevails far beyond the region observed by Schlieren photograph.
高速作動バルブ方式衝撃波風胴及び高速マスサンプリングプローブによる超音速気体混合過程に関する実験
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