文章摘要
刘望生,李亚安,俞宏沛.密排平面阵辐射声场分析[J].声学技术,2010,(6):587~590
密排平面阵辐射声场分析
Acoustic field analysis of dense plane array
投稿时间:2009-11-15  修订日期:2010-02-13
DOI:
中文关键词: 平面阵  边界元  声辐射
英文关键词: plane array  BEM  acoustic radiation
基金项目:
作者单位E-mail
刘望生 西北工业大学航海学院, 西安, 710072 lwsh22@hotmail.com 
李亚安 西北工业大学航海学院, 西安, 710072  
俞宏沛 杭州应用声学研究所, 杭州, 310012  
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中文摘要:
      研究了声场分布计算射线声学和波动声学的基本理论,用解析法和声有限元-边界元法计算了平面阵辐射声场的指向性和波束宽度,分析了指向性和波束宽度随频率变化的规律。在消声水池中对研制出的密排平面九元阵的指向性和波束宽度进行了实验测量。测量结果表明,采用阵元第一谐振频率半波长布阵时频带内互辐射对指向性影响较小,在声波频率较高时,两种算法的计算值和实测值基本吻合,并且比较了两种算法计算声场指向性的适应范围和优缺点。
英文摘要:
      Sound field distribution is calculated based on radial acoustics and wave acoustics,the directivity and beam width of the a plane array are calculated at three resonance frequencies by using analytic method and acoustics FEM-BEM method,and the variation of directivity and beam width with frequency is analyzed.The directivity and beam width of the dense plane nine elements array are measured in anechoic water tank.The results show that mutual radiation has little influence on directivity when the array is formed according to the half wavelength of the first resonance frequency of the element.The calculating values agree with the measuring values well,and the virtue and demerit of calculating sound field directivity with the two models are compared.
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