| 轴对称管道及消声器声学问题的边界元法研究及应用 |
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| 引用本文： | 季振林,张志华,马强. 轴对称管道及消声器声学问题的边界元法研究及应用[J]. 哈尔滨工程大学学报, 1992, 0(1) |
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| 作者姓名： | 季振林 张志华 马强 |
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| 作者单位： | 哈尔滨船舶学院船舶动力工程系(季振林，张志华)，哈尔滨船舶学院船舶动力工程系(马强) |
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| 摘 要： | 边界元法应用于轴对称管道及消声器声场分布及消声特性计算,表面积分简化成沿母线及旋转角上的积分.对奇异积分采用解析法、数值法及间接法联合来消除奇异性.边界角点区分为两个不同的质点振速.对于较长或具有复杂形状的管道及消声器,提出了子结构边界元——传递关系矩阵法.对一些管道及消声器的传递损失进行了计算,并与其它方法计算结果及实验结果进行了比较
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| 关 键 词： | 轴对称消声器 消声特性 边界元法 传递关系矩阵 |
Research and Application of Boudary Element Method in Acoustic Problems of Axisymmetric Ducts and Mufflers |
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| Ji Zhenlin, Zhang Zhihua, Ma Qiang. Research and Application of Boudary Element Method in Acoustic Problems of Axisymmetric Ducts and Mufflers[J]. Journal of Harbin Engineering University, 1992, 0(1) |
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| Authors: | Ji Zhenlin Zhang Zhihua Ma Qiang |
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| Affiliation: | Dept. of Marine Power Eng. |
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| Abstract: | The BEM is applied to calculating the acoustic field and sound attenuation in axisymmetric ducts and mufflers, by which the surface integral can be reduced to a line integral along the generatrix and integral over the angle of revolution.The integral singularity can be eliminated by using unitedly analytical method, numerical solution and indirect method.Two particle vibrating velocities are supposed at points of corner.The substructure boundary element-transfer matrix method is presented for duct system of greater length or mufflers with complex geometry.The transmission loss have been calculated for some ducts and mufflers and compared with the results obtained by mean of other method and experiments. |
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| Keywords: | axisymmetric muffler sound attenuation boundary element method transfer matrix |
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