Abstract
Three-port silencers are frequently used in industry to merge two inlets into one common outlet stream or one inlet into two outlets. The current approaches to analyze the three-port silencers, including the BEM impedance matrix and the superposition method, are limited to small inlet and small outlet cross sections where the plane-wave assumption is still valid. In this paper, the recently developed BEM impedance-toscattering matrix method for large silencer analysis is extended to large three-port silencers so that the higherorder propagating modes at the inlets and outlets can be considered in the transmission loss (TL) calculation. The BEM TL solution is validated by an equivalent IL solution using the Automatically Matched Layer (AML) in the FEM for the one-inlet/two-outlet configuration.
| Original language | English |
|---|---|
| State | Published - 2017 |
| Event | 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong, China Duration: Aug 27 2017 → Aug 30 2017 |
Conference
| Conference | 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 |
|---|---|
| Country/Territory | China |
| City | Hong Kong |
| Period | 8/27/17 → 8/30/17 |
Keywords
- BEM
- FEM-AML
- Large three-port silencer
- Scattering matrix
- Transmission loss
ASJC Scopus subject areas
- Acoustics and Ultrasonics