潜艇辐射噪声近场特性研究.pdf

第30卷第3期 2011年6月声学技术 Technical Acoustics ,..20ll 潜艇辐射噪声近场特性研究高守勇1弘,王升1弘,马力1,周江涛2 (,北京,l∞l∞l ,湛江,524022) 摘要t为了掌握潜艇水下噪声体积源效应对近程测试的影响,在以潜艇为中心的直角坐标系下,采用若干个简单的单极子和偶极子相干组合建立潜艇辐射声场分布式多源模型,给出了复合声源辐射的总场。根据对潜艇噪声产生机理的分析,将潜艇辐射噪声的多源模型简化四个部位的亮点模型,设定复合声源由3个单极子和1个偶极子组成, 在三种工况下有不同的贡献比,进行了仿真计算,得到不同工况和测试距离时的通过特性曲线,结果表明在50~100m 距离上测试潜艇辐射噪声时,不同工况的声中心位置不同,将潜艇视为点声源来进行声源级换算时会带来误差。关键词t噪声源;亮点模型;近场特性;单板子;偶板子中图分类号·TB532 文献标识码:A Research ofSubmarine Noise Near FieldCharacteResea ma iel acteristic nne州 nSnC GAO Shouyongk2,WANG Sheng比,MA“I,ZHOU Jiangta02 ∞,china; 91388,PIA,Zhanj^=sg 524022,Guongdong,China) Abotr丑ct:In order master theinfluence ofsubmarine underwater noisevolume effects close-inmeasurement,centered theorigin ofcartesian coordinate systembysubmarine,submarine distributed multiple model established using severalsimple unipoles and dipoles∽oustic bination,and gives out the posite source. According theanalysis ofsubmarine noisegeneratingmechanism,the submarine radiation noise sources are simplified four parts ofthe putation posite sources of3unipole and ponent, through characteristic curves areobtained different work conditions and resultsshow anter varies differentwork conditions and regarding submarine as apoint source willgenerate measurelmelR me弱uring di