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Comparison of the component-wise and projection-based Padé approximant methods for acoustic coupled problems
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-6555-531X
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0003-1855-5437
2017 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 141, no 5, p. 4033-4033Article in journal (Refereed) Published
Abstract [en]

Several Padé-based computational methods have been recently combined with the finite element method for the efficient solution of complex time-harmonic acoustic problems. Among these, the component-wise approach, which focuses on the fast-frequency sweep of individual degrees of freedom in the problem, is an alternative to the projection-based approaches. While the former approach allows for piecewise analytical expressions of the solution for targeted degrees of freedom, the projection-based approaches may offer a wider range of convergence. In this work, the two approaches are compared for a range of problems varying in complexity, size and physics. This includes for instance the modeling of coupled problems with non-trivial frequency dependence such as for the modeling of sound absorbing porous materials. Conclusions will be drawn in terms of computational time, accuracy, memory allocation, implementation, and suitability of the methods for specific problems of interest.

Place, publisher, year, edition, pages
Acoustical Society of America (ASA), 2017. Vol. 141, no 5, p. 4033-4033
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-226992DOI: 10.1121/1.4989299OAI: oai:DiVA.org:kth-226992DiVA, id: diva2:1202793
Note

QC 20180522

Available from: 2018-04-30 Created: 2018-04-30 Last updated: 2018-05-22Bibliographically approved

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Rumpler, RomainGöransson, Peter

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Marcus Wallenberg Laboratory MWLVinnExcellence Center for ECO2 Vehicle design
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