脉冲源非线性声扰动在大气中传播的具体特征

IF 0.9 4区物理与天体物理 Q4 ACOUSTICS Acoustical Physics Pub Date : 2024-09-18 DOI:10.1134/S1063771024601808

S. I. Kosyakov, S. N. Kulichkov, A. A. Mishenin, E. V. Golikova

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引用次数: 0

摘要

研究了非线性脉冲声干扰在大气中传播的特点。提供了在球形和圆柱形传播条件下冲击波前沿形成和冲击波向低强度声波过渡的实验观测数据，以及在距离大于 1000 千米时脉冲形状的转变和前沿的拓宽。讨论了气体快速压缩过程中开尔文-赫尔姆霍兹不稳定性对冲击波前沿结构形成的影响。在大气条件下，这种不稳定性极大地影响了空气中的耗散过程，并形成了非线性波的前沿。

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Specific Features of Atmospheric Propagation of Nonlinear Acoustic Disturbances from Pulsed Sources

The features of the propagation of nonlinear pulsed acoustic disturbances in the atmosphere are considered. Data are presented on the experimental observation of shock front formation and the transition of a shock wave into a low-intensity acoustic wave with transformation of the pulse shape and broadening of the front at distances greater than 1000 km under both spherical and cylindrical propagation conditions. The influence of Kelvin–Helmholtz instability during rapid gas compression on the formation of the shock front structure is discussed. Under atmospheric conditions, such instability significantly affects dissipative processes in the air and forms the front of a nonlinear wave.

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来源期刊

Acoustical Physics 物理-声学

CiteScore

1.60

自引率

50.00%

发文量

审稿时长

3.5 months

期刊介绍： Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.