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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Spelling suggestions: "subject:"parallelle silencer"" "subject:"parallelle silencers""

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ANALYTICAL AND BOUNDARY ELEMENT SOLUTIONS OF BULK REACTING LINED DUCTS AND PARALLEL-BAFFLE SILENCERS

Li, Jundong 01 January 2017 (has links)
Lined silencers of various configurations are used to attenuate the noise from building HVAC equipment, gas turbines, and other machinery. First-mode analytical solutions are presented for sound attenuation along rectangular lined ducts, parallel-baffle silencers, and circular lined ducts. The sound absorptive lining is treated using a bulk property model. The analytical solutions entail solving a nonlinear characteristic equation in the transverse direction after the rigid-wall boundary condition is applied. The solution is compared to the boundary element solution and a local impedance analytical solution for several test cases.
Boundary Element Method
Lined Duct
Parallel-Baffle Silencer
Transmission Loss
Dissipative Silencer
Acoustics, Dynamics, and Controls
Applied Mechanics
Automotive Engineering
Industrial Engineering

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