物理
声波方程
声学
兰姆波
声波
物理声学
多普勒效应
波传播
黑洞(网络)
振动
有限元法
离子声波
瑞利波
光学
计算机科学
布线(电子设计自动化)
链路状态路由协议
热力学
路由协议
计算机网络
天文
作者
Shiling Yan,Alexey M. Lomonosov,Zhonghua Shen
摘要
The propagation of laser-generated Lamb waves in a two-dimensional acoustic black-hole structure was studied numerically and experimentally. The geometrical acoustic theory has been applied to calculate the beam trajectories in the region of the acoustic black hole. The finite element method was also used to study the time evolution of propagating waves. An optical system based on the laser-Doppler vibration method was assembled. The effect of the focusing wave and the reduction in wave speed of the acoustic black hole has been validated.
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