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Indexed by:期刊论文

Date of Publication:2017-11-01

Journal:ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

Included Journals:Scopus、SCIE、EI

Volume:84

Page Number:19-24

ISSN No.:0955-7997

Key Words:FAQP; Acoustic radiation; High frequency; Irregular frequency; Normal-derivative integral equation; Burton and Miller formulation

Abstract:Frequency averaged normal-derivative Helmholtz integral equation is proposed to get robust predictions of the frequency averaged quadratic pressure (FAQP) radiated from the structures at medium and high frequencies. The non-uniqueness problem of frequency averaged Helmholtz integral equation and frequency averaged normal-derivative Helmholtz integral equation is overcome by the coupling method combining these two integral equations. The numerical examples are given to demonstrate the versatility of the frequency averaged normal-derivative Helmholtz integral equation and the coupling method. (C) 2017 Elsevier Ltd. All rights reserved.