F134 炭酸ガスの超音速二相流ノズルの出口に発生する斜め衝撃波に関する実験的研究(OS-11:沸騰・二相流(4))

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In the refrigeration systems using the two-phase flow ejector, it is important to understand expansion waves and shock waves which are generated at the outlet of nozzle. In this experiment, two nozzles are constructed with and without turning corner at the outlet and experiments are carried out to investigate the characteristics of pressure rising at the outlet caused by oblique shock waves. The evident starting points of pressure rise by oblique shock wave can be measured and interferences with the expansion waves are diminished. The experimental results show that the shock wave angle obtained are close to that predicted by the thermal frozen theory than by the equilibrium theory, while the measured strength of the oblique shock waves show contradictory conclusion.
2011-10-28