A new technique for the study of test time and rarefaction wave effects in hypersonic shock tubes
A new technique for the study of test time and rarefaction wave effects in hypersonic shock tubes
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高超声速激波管试验时间和稀疏波效应研究新技术
DOI：
10.1088/0022-3727/8/12/007
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发表时间：
1975
期刊：
影响因子：
--
通讯作者：
M. Phillips
中科院分区：
文献类型：
--
作者：
M. Phillips
在冲击管中了解测试时间很重要。计算值是不可靠的，因为非理想效应（例如通过开口膜片和边界层现象）起着很大的作用。此外，在燃烧驱动和电弧驱动的冲击管的情况下，驾驶员气体通常仅是鲜为人知的。由于这些原因，必须通过实验评估测试时间。作者开发了一种采用涂片相机来测量测试时间的技术。该技术还提供了一种确定冲击管操作的方法，其中从驱动器部分反射出稀疏波的作用是主要的作用。
A knowledge of test time in shock tubes is important. Calculated values are unreliable because of the large role played by non-ideal effects such as turbulent flow through the opening diaphragm and by boundary layer phenomena. Moreover, in the case of combustion-driven and arc-driven shock tubes the driver gas state is usually only poorly known. For these reasons the test time must be evaluated experimentally. The author has developed a technique which employs a smear camera to measure the test time. The technique also provides a method for determining that regime of shock tube operation where the rarefaction wave reflected from the driver section plays a dominant role.