Boundary Element Method for Intensity Potential Approach: Predicting the Radiated Sound Power from Partially Enclosed Noise Sources
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
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.
Energy, Equation, Fields, Reverberation, Model
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-100786DOI: 10.3813/AAA.918540ISI: 000306459100007ScopusID: 2-s2.0-84864415415OAI: oai:DiVA.org:kth-100786DiVA: diva2:545108
FunderSwedish Research Council, Dnr 621-2010-3889TrenOp, Transport Research Environment with Novel Perspectives
QC 201208172012-08-172012-08-172016-04-26Bibliographically approved