Study of Shock Trains and Pseudo-Shock Waves in Constant Area Ducts
Study of Shock Trains and Pseudo-Shock Waves in Constant Area Ducts
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DOI：
10.2514/6.2014-0949
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发表时间：
2014-01
期刊：
影响因子：
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通讯作者：
T. Oka;D. Ono;Y. Miyazato
中科院分区：
文献类型：
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作者：
T. Oka;D. Ono;Y. Miyazato
本文利用壁面压力测量和管道中心线静压测量，对等截面圆管道中的激波串和伪激波结构进行了实验研究。在激波串的上游位置，自由流动马赫数约为1.5，基于自由流动条件的单位雷诺数约为1.6× 107，阻塞比在0.18 ~ 0.24之间。利用Waltrup和Billig提出的经验关系式对激波串和伪激波引起的静压上升的实验数据进行了分析。同时，将以往和现在的伪激波静压比的实验值与质量平均伪激波模型的理论值进行了比较。
Experiments on the structure of shock trains and pseudo-shock waves in a constant area circular duct have been performed by wall pressure measurements as well as duct centerline static pressure measurements using a through-tube system. At the position just upstream of the shock train, the freestream Mach number is around 1.5, the unit Reynolds number based on the freestream conditions is around 1.6×10 7 , and the blockage ratios are in the range from 0.18 to 0.24. The experimental data on the static pressure rise due to the shock train and pseudo-shock are analyzed using the empirical correlation proposed by Waltrup and Billig. Also, the previous and present experimental values for the static pressure ratio across the pseudo-shock are compared with the theoretical ones by the mass-averaging pseudo-shock model.