Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5011038 | Applied Acoustics | 2017 | 12 Pages |
Abstract
For multi-chamber silencers with non-uniform cross-sections at axial direction, the coupling method based on subdomain division technique is proposed. The silencer is divided into several subdomains which impedance matrixes are calculated by using suitable 3-D methods. Combining with the continuity conditions at the interfaces to solve the integral impedance matrix of the silencer, thereby the transmission loss is derived. For the double-chamber silencers, the transmission loss and computational speed results from the proposed method, the numerical mode matching (NMM) method, 3-D finite element (FE) method predictions and experimental measurements are compared, which verifies the accuracy and efficiency.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Z. Fang, Z.L. Ji, C.Y. Liu,