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Boundary Element Method for Intensity Potential Approach: Predicting the Radiated Sound Power from Partially Enclosed Noise Sources
Chalmers, Sweden.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Structural and vibroacoustics.
2012 (English)In: Acta Acoustica united with Acustica, ISSN 1610-1928, E-ISSN 1861-9959, Vol. 98, no 4, 588-599 p.Article in journal (Refereed) Published
Abstract [en]

This paper proposes the boundary element method for the intensity potential for prediction of high-frequency sound power flow through partial enclosures. The intensity potential approach is based on the local power balance in a lossless medium and the Helmholtz decomposition of the vector field of time-averaged sound intensity. The result is a Poisson equation for a scalar intensity potential. The intensity potential formulation and the boundary element method are both suitable for exterior problems. The governing equations of the intensity potential and the boundary element method for solving this problem are presented. Results from the proposed method are compared with experimental results, for the case of radiated sound power in one-third-octave bands from sources in a partial enclosure. The results show that the method is applicable for estimation of global radiated sound power in one-third-octave bands in the high-frequency range.

Place, publisher, year, edition, pages
S. Hirzel Verlag , 2012. Vol. 98, no 4, 588-599 p.
Keyword [en]
Energy, Equation, Fields, Reverberation, Model
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-100786DOI: 10.3813/AAA.918540ISI: 000306459100007Scopus ID: 2-s2.0-84864415415OAI: oai:DiVA.org:kth-100786DiVA: diva2:545108
Funder
Swedish Research Council, Dnr 621-2010-3889TrenOp, Transport Research Environment with Novel Perspectives
Note

QC 20120817

Available from: 2012-08-17 Created: 2012-08-17 Last updated: 2017-12-07Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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