Interaction of Linear Waves with Oblique Shock Waves
Interaction of Linear Waves with Oblique Shock Waves
复制标题
DOI：
10.1063/1.1691825
复制
发表时间：
1968-11
影响因子：
4.6
通讯作者：
J. F. Mckenzie;K. O. Westphal
中科院分区：
文献类型：
--
作者：
J. F. Mckenzie;K. O. Westphal
公式推导出的振幅的波发散的冲击作为一个结果，任何给定的入射扰动。对于强激波，即马赫数（M）大的情况，在理想气体中，透射声波的压力幅值和能流的垂直于激波的分量比入射声波的大O（M ~ 2）。此外，如果冲击声波在临界角附近入射，则透射声波的压力幅值与入射声波的压力幅值之比为O（M3）。另一方面，如果声波垂直入射到激波的背面，则仅约1%的声能通量以声波的形式反射。它还表明，入射熵涡波可以产生强烈的声波背后的强冲击。声波的透射系数、反射系数和生成系数与马赫数和入射角的关系用一系列曲线表示。那个...
Formulas are derived for the amplitudes of waves that diverge from a shock as a result of any given incident disturbance. For strong shocks, that is the Mach number (M) is large, in an ideal gas it is shown that the pressure amplitude and the component of the energy flux normal to the shock of a transmitted sound wave are of O (M2 greater than those in the incident sound wave. Furthermore, if the impinging sound wave is incident near the critical angle the ratio of the pressure amplitude of the transmitted sound wave to that of the incident one is of O (M3). On the other hand, if a sound wave is normally incident upon the back of the shock, only about 1% of the acoustic energy flux is reflected in the form of sound waves. It is also shown that incident entropy‐vorticity waves can generate intense sound waves behind a strong shock. The dependence of the transmission, reflection, and generation coefficients for sound waves on the Mach number and the angle of incidence is depicted in a series of graphs. The ...