A study on sound and vibration characteristics of a rudder-wing composite structure based on bi-directional fluid-solid coupling

被引：0
|
作者：
Zhang, Zhenhai [1 ]
Tong, Bo [1 ]
Qu, Duo [2 ]
机构：
[1] College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan
[2] College of Power Engineering, Naval University of Engineering, Wuhan
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 20期
关键词：
flow induced noise; fluid-solid coupling; rudder-wing structure; vibration;
D O I：
10.13465/j.cnki.jvs.2024.20.022
中图分类号：
学科分类号：
摘要：
In order to achieve precise simulation of the flow field and sound field around the rudder and wing of an underwater vehicle during rudder rotation, based on the bidirectional fluid solid coupling theory, the flow field was calculated by using the detached eddy simulation turbulence model, and the fluid-structure interaction boundary was treated by using the automatic matching layer technology to analyze the fluid-structure interaction characteristics of the rudder-wing combined structure in the rotating process, the accuracy of which has been verified by comparing with model experiments. On this basis, the effects of rudder angle, concentrated loads, water filling inside the rudder, and flow velocity on structural sound radiation were studied. The results show that the increase of rudder angle increases the non-uniformity of the flow field, reduces the stiffness of the rudder-wing structure, and exacerbates the vibration of the airfoil, which contributes to the increase of total sound pressure level and vibration acceleration level; for periodic excitation with equal amplitude, the more concentrated the load distribution, the greater the contribution to sound radiation; filling the rudder with water can reduce the amplitude of sound pressure in the mid to high frequency range, but it will increase the number of line spectra of structural sound radiation. In addition, the increase of flow velocity will increase the sound radiation. © 2024 Chinese Vibration Engineering Society. All rights reserved.
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页码：213 / 220
页数：7
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