Propagation of internal solitary waves excited by resonance with submarines in stratified fluids

被引：0
|
作者：
Yang J.-Y. [1 ]
Du Y.-C. [1 ]
Yang L. [1 ]
机构：
[1] College of Power Engineering, Naval University of Engineering, Wuhan
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2022年 / 26卷 / 01期
关键词：
Internal solitary wave; KdV equation; Propagation; Resonant excitation; Stratified flow; Submarine;
D O I：
10.3969/j.issn.1007-7294.2022.01.007
中图分类号：
学科分类号：
摘要：
When the speed of a submarine is equal to the horizontal wave velocity of internal waves, the submarine sailing in stratified fluids will resonate to excite internal solitary waves. Studying the propagation of submarine internal waves has an important military application value for detecting the underwater motions of submarines. With the influence of dispersion and nonlinear effects taken into consideration, a nonlinear KdV mathematical model of submarine internal wave propagation is established. TH numerical method is used to solve the wave function of different modes of internal waves. The dispersion coefficient and nonlinear coefficient in the nonlinear KdV mathematical model can be calculated from the known local buoyancy frequency. The finite difference method is used to calculate the nonlinear model of KdV, and the propagation law of solitary waves excited by submarines is studied. The results show that the errors between the calculated internal wave propagation phase velocity and amplitude and the experimental results are less than 20%, which indicates that the established KdV model can effectively describe the propagation of internal solitary waves excited by submarines. © 2022, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：59 / 66
页数：7
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