水下航行体孔群流激噪声试验研究  

Experimental study on flow-induced noise of hole group in underwater vehicle

作　　者：刘继明[1] 潘治[1] 章君强 李新汶[1] LIU Ji-ming;PAN Zhi;ZHANG Jun-qiang;LI Xin-wen(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China)

机构地区：[1]武汉第二船舶设计研究所,湖北武汉430205

出　　处：《舰船科学技术》2021年第9期44-47,共4页Ship Science and Technology

摘　　要：孔群是目前水下航行体通流口较为青睐的开口形式,主要目的是降低开口流动激励及噪声。为了研究孔群流动激励特性及其主要参数对流激噪声的影响,借助自航模试验平台对孔群模型进行了流激噪声试验。试验模型包括无孔模型、长圆孔群模型、圆孔群模型等,试验获得了孔群流动激励特性,以及孔群形式、尺寸等对流激噪声的影响程度。试验研究表明,孔群主要导致低频段流动激励恶化,且存在低频特征线谱,圆孔群流动激励优于长圆孔群;减小孔群单孔尺寸,有利于抑制线谱及宽带流动激励。Hole group is currently the preferred opening form of the flow passage of underwater vehicles.Its main purpose is to reduce the flow excitation and noise of the opening.In order to study the flow excitation characteristics of the hole group and the influence of its main parameters on the flow-induced noise,an experimental study was carried out on the hole group models by the self-navigation model test platform.The test models consist of non-hole model,long circular hole group model,circular hole group model,etc.The flow excitation of the hole groups,as well as the degree of influence of the hole form or the hole size on the flow-induced noise.The experimental research shows that the holes mainly leads to deterioration of flow excitation in low frequency section.The flow excitation includes low frequency line spectrum.The flow excitation of the circular hole group is weaker than the long circular hole group.Reducing the single hole size of the hole group is beneficial to inhibiting line spectrum and broadband flow excitation.

关 键 词：孔群 空腔 流激噪声 自航模 

分 类 号：U661.1[交通运输工程—船舶及航道工程]