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A residue-based mode selection and sorting procedure for efficient poroelastic modeling in acoustic finite element applications
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Numerical acoustics.ORCID iD: 0000-0002-6555-531X
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Numerical acoustics.ORCID iD: 0000-0003-1855-5437
Conservatoire National des Arts et Métiers, Paris France. (LMSSC)
2013 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 134, no 6, 4730-4741 p.Article in journal (Refereed) Published
Abstract [en]

Analysis of three-dimensional sound propagation in porous elastic media with the Finite Element (FE) method is, in general, computationally costly. Although it is the most commonly used predictive tool in complex noise control applications, efficient FE solution strategies for large-size industrial problems are still lacking. In this work, an original procedure is proposed for the sorting and selection of the modes in the solution for the sound field in homogeneous porous domains. This procedure, validated on several 2D and 3D problems, enables to reduce the modal basis in the porous medium to its most physically significant components. It is shown that the size of the numerical problem can be reduced, together with matrix sparsity improvements, which lead to the reduction in computational time and enhancements in the efficacy of the acoustic response computation. The potential of this method for other industrial-based noise control problems is also discussed.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2013. Vol. 134, no 6, 4730-4741 p.
Keyword [en]
Porous Materials, Displacement Formulation, Reduction Method, Frequency Range, Elastic Waves, Propagation, Resolution, Vectors
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-140160DOI: 10.1121/1.4824966ISI: 000328654900016Scopus ID: 2-s2.0-84890141863OAI: oai:DiVA.org:kth-140160DiVA: diva2:689506
Note

QC 20140121. QC 20160212

Available from: 2014-01-21 Created: 2014-01-17 Last updated: 2017-12-06Bibliographically approved

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Rumpler, RomainGöransson, Peter

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