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Gaborit, M., Dazel, O. & Göransson, P. (2018). A simplified model for thin acoustic screens. Journal of the Acoustical Society of America, 144(1), EL76-EL81
Open this publication in new window or tab >>A simplified model for thin acoustic screens
2018 (English)In: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 144, no 1, p. EL76-EL81Article in journal (Refereed) Published
Abstract [en]

A generalization of the commonly used pressure jump modeling of thin porous layers is proposed. The starting point is a transfer matrix model of the layer derived using matrix exponentials. First order expansions of the propagating terms lead to a linear approximation of the associated phenomena and the resulting matrix is further simplified based on physical assumptions. As a consequence, the equivalent fluid parameters used in the model may be reduced to simpler expressions and the transfer matrix rendered sparser. The proposed model is validated for different backing conditions, from normal to grazing incidence and for a wide range of thin films. In the paper, the physical hypotheses are discussed, together with the origin of the field jumps.

Place, publisher, year, edition, pages
Acoustical Society of America (ASA), 2018
National Category
Control Engineering
Identifiers
urn:nbn:se:kth:diva-233427 (URN)10.1121/1.5047929 (DOI)000440810900013 ()30075680 (PubMedID)2-s2.0-85051036767 (Scopus ID)
Note

Correction in DOI:10.1121/1.5121612 ISI:000483887400062

QC 20180821

Available from: 2018-08-21 Created: 2018-08-21 Last updated: 2019-09-30Bibliographically approved
Gaborit, M., Göransson, P. & Dazel, O. (2018). Simplification of the transfer matrix model for acoustic screens. In: : . Paper presented at ISMA-USD 2018.
Open this publication in new window or tab >>Simplification of the transfer matrix model for acoustic screens
2018 (English)Conference paper, Published paper (Refereed)
National Category
Fluid Mechanics and Acoustics
Identifiers
urn:nbn:se:kth:diva-240275 (URN)2-s2.0-85060380314 (Scopus ID)
Conference
ISMA-USD 2018
Note

QC 20190418

Available from: 2018-12-14 Created: 2018-12-14 Last updated: 2019-04-18Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-9071-6325

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