摘要
为降低水下航行器在高航速下的流激噪声,提升其性能,将复合材料应用于围壳和上层建筑,利用数值计算方法研究围壳-上层建筑结构外部流场的特点及内部流激噪声的变化规律,对比全金属材料与复合材料下围壳-上层建筑结构流激噪声的变化规律及不同工况下复合围壳-上层建筑结构流激振动噪声的变化规律。研究表明:围壳-上层建筑结构内部的流激噪声分布主要与场点到结构表面的距离有关;全金属材料围壳-上层建筑结构的流激噪声整体上大于复合材料围壳-上层建筑结构的流激噪声;围壳-上层建筑结构的流激噪声随速度的增大而增大。研究结果可供复合材料在潜艇降噪领域的应用参考。
To reduce the hydrodynamic noise of underwater vehicles at high speeds and to enhance their performance,composite materials are used in the submarine's enclosure-upper structure.Numerical computation methods are applied to study the characteristics of the external flow field around the enclosure-upper structure and the patterns of internal flow-induced noise variation.A comparative analysis is conducted to assess the flow-induced noise variation of the enclosure-upper structure made of all-metal materials versus composite materials,as well as the variation of flow-induced vibration and noise in composite enclosure-upper structures under different working conditions.The study reveals that the distribution of internal flow-induced noise within the enclosure-upper structure is primarily related to the distance from the field point to the structural surface.The overall flow-induced noise of all-metal enclosure-upper structures is found to be greater than that of structures made of composite materials.Furthermore,the flow-induced noise of the enclosure-upper structure increases with an increase in velocity.This research provides a reference for the application of composite materials in the field of submarine noise reduction.
作者
尹耀薇
叶天贵
陈玉坤
靳国永
欧阳肖
YIN Yaowei;YE Tiangui;CHEN Yukun;JIN Guoyong;OUYANG Xiao(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《船舶工程》
CSCD
北大核心
2024年第8期35-47,共13页
Ship Engineering
关键词
围壳
大涡模拟
流激噪声
减振降噪
enclosure
large eddy simulation
fluid-induced noise
vibration and noise reduction
