Please use this identifier to cite or link to this item:
Title: Time-domain prediction of acoustics in domains with realistic boundaries
Authors: Shum, Wai-sun
Keywords: Sound
Time-domain analysis
Hong Kong Polytechnic University -- Dissertations
Issue Date: 2000
Publisher: The Hong Kong Polytechnic University
Abstract: The validity of the recently proposed time-domain impedance boundary condition is explored. The one-dimensional piston in an impedance tube problem is formulated and attempted using the classical Laplace transform to compare with a recently developed time-domain method. It will be shown that the classical frequency-domain method does not lead to uniformly convergent analytic solutions in one-dimension, but to finite series approximations, which resemble the long time stable and accurate numerical solutions. The time-domain solution with time-domain impedance boundary condition is then compared with the frequency-domain solution of harmonic point sources near an impedance plane in two dimensions, which establishes the agreement between time-domain and frequency-domain approaches at discrete frequencies. Solutions for noise abatement with mixed impedance grounds using different mixed impedance models and Boundary Element Method (BEM) numerical scheme are compared with those using the time-domain approach. Applications and further extensions of the time-domain approach to problems in acoustics will be addressed.
Description: vii, 75 leaves : ill. ; 30 cm.
PolyU Library Call No.: [THS] LG51 .H577M ME 2000 Shum
Rights: All rights reserved.
Appears in Collections:Thesis

Files in This Item:
File Description SizeFormat 
b15354246_link.htmFor PolyU Users166 BHTMLView/Open
b15354246_ir.pdfFor All Users (Non-printable)2 MBAdobe PDFView/Open
Show full item record
PIRA download icon_1.1View/Download Contents

Page view(s)

Last Week
Last month
Citations as of Jul 10, 2018


Citations as of Jul 10, 2018

Google ScholarTM


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