Acoustic Wave Generation by Entropy Discontinuities Flowing Past an Area Change
Acoustic Wave Generation by Entropy Discontinuities Flowing Past an Area Change
复制标题
由流过面积变化的熵不连续性产生声波
DOI：
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发表时间：
1967
期刊：
影响因子：
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通讯作者：
E. Cuadra
中科院分区：
文献类型：
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作者：
E. Cuadra
一个解决方案，提出了两个弱的压力波的强度所产生的熵波的有限强度对流（在亚音速流）过去的无穷小的面积变化。这种熵波可以是单一气体中的温度不连续性，也可以是两种不同气体之间的界面。根据这个非线性解决方案所产生的压力波的强度进行比较与以前（未发表）的结果为一个无穷小的温度不连续性，并给出了问题的物理参数的波强度的敏感性。这个解决方案已与其他（现有的）相互作用的解决方案，需要构建一个计算机程序，用于预测的“气泡”（由两个这样的接口）在一个无限的管道中的通道所产生的声音。一副程序卡可从作者处索取。
A solution is presented for the strengths of the two weak pressure waves produced by an entropy wave of finite strength being convected (in a subsonic flow) past an infinitestimal area change. Such an entropy wave may be either a temperature discontinuity in a single gas or an interface between two different gases. The strengths of the generated pressure waves according to this nonlinear solution are compared with previous (unpublished) results for an infinitesimal temperature discontinuity, and the sensitivity of the wave strengths to the physical parameters of the problem is given. This solution has been combined with other (existing) interaction solutions required to construct a computer program for prediction of the sound produced by the passage of a “bubble” (composed of two such interfaces) in an infinite pipe. A deck of program cards is available from the author upon request.