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A linearized Navier-Stokes solver for the prediction of sound propagation in duct systems
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Aeroacoustics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Aeroacoustics. 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, MWL Flow acoustics. KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0003-4103-0129
2011 (English)In: 40th International Congress and Exposition on Noise Control Engineering 2011 Proceedings: Volume 1, 2011, 248-256 p.Conference paper, Published paper (Other academic)
Abstract [en]

This paper is aimed at the development of simulation methodologies suitable both as industrial tools for the prediction of the acoustic performance of flow duct systems, as well as for analyzing the governing mechanisms of duct aeroacoustics.. A frequency-domain linearized Navier-Stokes equations methodology has been developed to simulate sound propagation and acoustic scattering in flow duct systems. The performance of the method has been validated to experimental data and analytical solutions for several cases of in-duct area expansions and orifice plates at different flow speeds. Good agreement has generally been found, suggesting that the proposed methodology is suitable for analyzing internal aeroacoustics.

Place, publisher, year, edition, pages
2011. 248-256 p.
Keyword [en]
Duct acoustics, Linearized navier-stokes equations, Sound propagation
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-65773Scopus ID: 2-s2.0-84867956200OAI: oai:DiVA.org:kth-65773DiVA: diva2:483678
Conference
40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011, Osaka, Japan, September 4-7 2011
Funder
TrenOp, Transport Research Environment with Novel Perspectives
Note

QC 20140903

Available from: 2012-01-25 Created: 2012-01-25 Last updated: 2014-09-03Bibliographically approved

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Efraimsson, GunillaBoij, Susann

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Kierkegaard, AxelEfraimsson, GunillaBoij, Susann
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AeroacousticsLinné Flow Center, FLOWVinnExcellence Center for ECO2 Vehicle designMWL Flow acousticsMarcus Wallenberg Laboratory MWL
Fluid Mechanics and Acoustics

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