Please use this identifier to cite or link to this item:
Title: Modelling dissipative silencers using point collocation
Authors: Kirby, R
Keywords: Dissipative silencer;Point collocation;Splitter silencers;HVAC silencer
Issue Date: 2003
Publisher: International Institute of Acoustics and Vibration
Citation: CD-ROM Proceedings of the Tenth International Congress on Sound and Vibration (ICSV10). Stockholm, Sweden, 7-10 July, 2003.
Abstract: Dissipative silencers are widely used in ducts to attenuate broad band noise. Silencers may assume many different shapes and sizes, ranging from a relatively compact automotive exhaust silencer, to a much larger HVAC splitter silencer. To accommodate such a wide range of silencer geometries it is convenient to use numerical methods such as the finite element method, although for many silencers the use of a fully three dimensional approach may computationally be too expensive. A convenient alternative is to use a method known as point collocation which seeks to mesh only the cross-section of a silencer (assuming a uniform cross-section in the axial direction) and then numerically matches continuity conditions at discrete transverse locations over the inlet and outlet planes of the silencer. This paper examines the suitability of using point collocation to compute the transmission loss for a wide range of silencer configurations. The robustness and flexibility of the method is reviewed with a view to adopting this technique as a single, efficient, design tool for studying dissipative silencers of any cross-sectional shape and size.
Appears in Collections:Publications
Mechanical and Aerospace Engineering
Dept of Mechanical Aerospace and Civil Engineering Research Papers

Files in This Item:
File Description SizeFormat 
Modelling dissipative silencers using point collocation.txt331 BTextView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.