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Simulation of aerodynamically generated sound using hybrid aeroacoustic methods
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.
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: 0000-0003-0176-5358
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
2015 (English)In: 10th European Congress and Exposition on Noise Control Engineering, Euronoise, 2015, 521-526 p.Conference paper, Published paper (Other academic)
Abstract [en]

A numerical method to simulate aerodynamically generated sound and its propagation is presented in this paper. The transient flow field solution is established using a compressible 2D Navier 6WRNHV VROYHU 7KH VRXUFH WHUPV DUH WKHQ GHILQHG E\ XVLQJ +RZH V vortex sound aeroacoustic analogy and are evaluated from the flow solutions. The propagation of acoustic waves from these sources is then performed using the wave expansion method (WEM). This is a discretization method suitable for solving wave propagation through inhomogeneous potential flows. The method is tested on a flow of a rectangular open cavity. The flow conditions are a free stream Mach number of M=0.5 and Reynolds number of Re=1500.. The numerical results are compared to experimental and numerical results from other studies of the same configuration. 

Place, publisher, year, edition, pages
2015. 521-526 p.
Series
Proceedings of Euronoise, ISSN 2226-5147
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-175823OAI: oai:DiVA.org:kth-175823DiVA: diva2:862571
Conference
10th European Congress and Exposition on Noise Control Engineering, Euronoise, Maastricht, Netherlands
Note

QC 20151023

Available from: 2015-10-22 Created: 2015-10-22 Last updated: 2016-04-25Bibliographically approved

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O'Reilly, Ciarán J.Efraimsson, Gunilla

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Hammar, JohanO'Reilly, Ciarán J.Efraimsson, Gunilla
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