直角域内的结构声辐射特性研究

Research on acoustic radiation characteristic in a three-dimensional right-angle space

直角空间域的边界特性影响内部结构的声辐射特性。文章通过引入保角映射取得不同边界特性下直角空间域内声边界元法的格林函数,以此导出相应的声辐射方程。并以脉动球声源的声辐射为例,进行数值分析并对比了直角空间域的边界特性、频率和与边界的距离对声功率和声辐射指向性的影响。

The different bounded characters of right-angle space affect the acoustic radiation characteristic.With the conformal transformation,the Green＇s function of the acoustic BEM function of right-angle space is deduced,and the corresponding acoustic radiation function is obtained.In this paper,the acoustic radiation of pulsating sphere for example,the acoustic radiation power and radiation directivity effect by the bounded character,frequency and distance are analyzed.