Three-dimensional diffraction of shock wave
Three-dimensional diffraction of shock wave
复制标题
冲击波三维衍射
DOI：
10.1007/978-3-642-77648-9_34
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
A. M. Shul'meister
中科院分区：
文献类型：
--
作者：
S. Bazarov;T. V. Bazhenova;O. V. Bulat;V. Golub;A. M. Shul'meister
本文对轴对称和方形截面通道出口的冲击波绕射进行了实验和数值研究。流动由阴影图和窄参考光束的激光干涉仪显示。利用压电式压力换能器测量了冲击波的后向绕射强度。在轴对称情况下，衍射波的移动速度比平面情况下的慢，而强度下降得更快。结果表明，正方形截面通道出口绕射激波的传播速度不同，使三维激波绕射的法线图像发生了45度的转折。
This paper describes an experimental and numerical study of the shock wave diffraction at the exit of axisymmetric and square cross-sectional channels. The flow was visualized by a shadowgraph and a laser interferometer with a narrow reference beam. The intesity of the shock wave diffracted backwards was measured by means of piezoelectric presssure transducers. In the axisymmetrical case the diffracted wave moves more slowly than that one in the plane case, and its intensity falls faster. It was revealed that different propagation velocities of the diffracted shock wave at the exit of the square cross-sectional channel results in a 45 degree turn of the picture of the normal view of the 3-dimensional shock diffraction.