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Simulations of the scattering of sound waves at a sudden area expansion in a 3D duct
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-5757-3668
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0002-9061-4174
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0003-4103-0129
2014 (English)In: 21st International Congress on Sound and Vibration 2014, ICSV 2014, international Institute of Acoustics and Vibrations , 2014, Vol. 1, p. 1420-1427Conference paper, Published paper (Refereed)
Abstract [en]

The scattering of acoustic plane waves at a sudden area expansion in a duct without flow is simulated using a linearized Navier-Stokes equations solver in frequency domain. The aim is to validate the numerical methodology for three-dimensional simulations, and to investigate the acoustic properties of the area expansion. A comparison of results from numerical simulations, measurements and analytical solutions is presented. It is shown that results for the acoustic scattering obtained by different wave decomposition methods are in excellent agreement.

Place, publisher, year, edition, pages
international Institute of Acoustics and Vibrations , 2014. Vol. 1, p. 1420-1427
Keywords [en]
Acoustic properties, Ducts, Frequency domain analysis, Navier Stokes equations, Acoustic plane waves, Acoustic Scattering, Frequency domains, Linearized navier-stokes equations, Numerical methodologies, Three dimensional simulations, Wave decomposition
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-160655Scopus ID: 2-s2.0-84922624833ISBN: 978-1-63439-238-9 (print)OAI: oai:DiVA.org:kth-160655DiVA, id: diva2:790908
Conference
21st International Congress on Sound and Vibration 2014, (ICSV 21) Beijing, China 13-17 July 2014
Note

QC 20150226

Available from: 2015-02-26 Created: 2015-02-26 Last updated: 2019-02-28Bibliographically approved

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Efraimsson, GunillaBoij, Susann

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