Influence of Secondary Diaphragm on Flow Quality in Expansion Tubes

Influence of Secondary Diaphragm on Flow Quality in Expansion Tubes
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二次隔膜对膨胀管内流动质量的影响

DOI：
10.1007/978-3-642-78829-1_32
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发表时间：
1995
期刊：
--
影响因子：
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通讯作者：
R. Stalker
R. Stalker
中科院分区：
--
文献类型：
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作者：
G. Roberts;R. Morgan;R. Stalker

文献摘要

被引文献

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实验研究了二次隔膜厚度和预变形对皮托管压力和侧壁(静态)压力的影响。昆士兰大学的TQ膨胀管装置以激波管模式运行，以Ar为驱动气体和测试气体。结果表明，隔膜和驾驶员-测试气体界面之间的激波反射可能会导致扰动传播到测试气流中，导致运行提前终止。避免这种情况的最佳方法是使用尽可能薄并在运行前预先变形的隔膜。
Experiments are described in which the influence of secondary diaphragm thickness and pre-deformation on Pitot and sidewall (static) pressures are investigated. The University of Queensland TQ expansion tube facility was operated in shock tube mode with argon as the driver and test gases. The results suggest that shock reflections between the diaphragm and the driver-test gas interface can cause disturbances to be propagated into the test gas flow, causing early termination of the run. This is best avoided by using diaphragms which are as thin as possible and pre-deformed prior to the run.