Growth of the total pressure recovery factor in a flow behind a shock wave emerging from a channel with concave corners in cross section
Growth of the total pressure recovery factor in a flow behind a shock wave emerging from a channel with concave corners in cross section
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从横截面有凹角的通道中出现的冲击波后面的流动中总压力恢复因子的增长
DOI：
10.1134/1.1579802
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发表时间：
2003
影响因子：
0.6
通讯作者：
M. Bragin
中科院分区：
文献类型：
--
作者：
T. V. Bazhenova;V. Golub;A. L. Kotel’nikov;A. Chizhikov;M. Bragin
本文研究了横截面上有凹凸角的方形通道中的激波与障碍物相互作用的实验数据。流场结构的成像是通过高速摄影的阴影图案。通过测量垂直于流动方向的障碍物处的压力来确定流动中的总压力损失。已确定，与圆形或方形横截面通道的情况相比，X形横截面通道流出时的流动阻力导致的总压力损失显著降低。
Experimental data on the interaction of an obstacle with a shock wave emerging from a square channel with convex and concave corners in the cross section are considered. The flow structure was imaged by high-speed photography of shadow patterns. The total pressure losses in the flow were determined by measuring pressure at an obstacle oriented perpendicularly to the flow. It is established that the total pressure losses as a result of the flow drag upon efflux from the channel with X-shaped cross section are significantly lower as compared to the case of a channel with a round or square cross section.