ACOUSTIC ATTENUATION PERFORMANCE OF CIRCULAR EXPANSION CHAMBERS WITH OFFSET INLET/OUTLET: I. ANALYTICAL APPROACH
ACOUSTIC ATTENUATION PERFORMANCE OF CIRCULAR EXPANSION CHAMBERS WITH OFFSET INLET/OUTLET: I. ANALYTICAL APPROACH
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DOI：
10.1006/jsvi.1998.1514
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发表时间：
1998-06
影响因子：
4.7
通讯作者：
A. Selamet;Z. Ji
中科院分区：
文献类型：
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作者：
A. Selamet;Z. Ji
摘要膨胀室的进出口位置对高阶模态的激发和抑制起着控制作用，对消声器的消声性能有着重要的影响。通过结合声压和质点速度的连续性条件以及进出口不连续处Fourier-Bessel函数的正交性关系，建立了一种确定具有偏置进出口管道的圆形膨胀室的传递损失的三维解析方法。从本方法得到的结果进行了比较与经典的一维预测和早期的多维作品。
Abstract The inlet and outlet locations of expansion chambers can significantly affect the acoustic attenuation performance of the silencer, due to their control over the excitation and suppression of higher order modes. By combining the continuity conditions of the acoustic pressure and particle velocity with the orthogonality relations of Fourier–Bessel functions at the inlet and outlet discontinuities, the present study develops a three-dimensional analytical approach to determine the transmission loss of circular expansion chambers with offset inlet and outlet ducts. The results obtained from the present approach are compared with the classical one-dimensional predictions and the earlier multidimensional works.