A unified approach to predict near and far-field acoustic pressures from Lighthill's analogy

P. Croaker, N. Kessissoglou, S. Marburg

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A unified approach to predict near and far-field acoustic pressures based on Lighthill's acoustic analogy is presented. Numerical techniques are implemented to remove the singularities that occur when the integral form of Lighthill's acoustic analogy is applied in the near-field. As the distance between the source and field point increases, the approach presented here behaves as a standard far-field implementation of Lighthill's analogy. The accuracy of the method is demonstrated by computing the near-field acoustic pressures arising from an analytical acoustic source distribution and comparing the results with those obtained using an alternate formulation from the literature.

Original languageEnglish
Title of host publicationProceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012
EditorsP.A. Brandner, B.W. Pearce
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9780646583730
StatePublished - 2012
Externally publishedYes
Event18th Australasian Fluid Mechanics Conference, AFMC 2012 - Launceston, Australia
Duration: 3 Dec 20127 Dec 2012

Publication series

NameProceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012

Conference

Conference18th Australasian Fluid Mechanics Conference, AFMC 2012
Country/TerritoryAustralia
CityLaunceston
Period3/12/127/12/12

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