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Sound Generated by an Unsteady Flow Field, Using a Hybrid Method
Energy Sciences, Lund University.ORCID iD: 0000-0001-7330-6965
Energy Sciences, Lund University.
2004 (English)In: Modelling Fluid Flow: The State of the Art, Springer-Verlag , 2004, 1, , 169-178 p.169-178 p.Chapter in book (Refereed)
Abstract [en]

The compressible Navier-Stokes equations describe both flow field as well as sound generation. The classical acoustic theory uses the hypothesis that the part of the flow field, which is the source of the acoustic field, has distinct scales so that the acoustic waves do not interfere with the flow. Thus, the velocity vector, the pressure and the density are split into semi-compressible components and an inviscid, irrotational acoustical components. The paper includes the details of the coupling between the turbulent flow (based on Large Eddy Simulation) and the acoustical part (based on Lighthill's acoustic analogy). The approach is applied to the acoustics of a non-isothermal jet.

Place, publisher, year, edition, pages
Springer-Verlag , 2004, 1. , 169-178 p.169-178 p.
Keyword [en]
Computational Aeroacoustics, Large Eddy Simulation, Acoustic Analogies, Acoustic Source Terms, Acoustic Boundary Conditions, Turbulent Jets
National Category
Fluid Mechanics and Acoustics Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-47907DOI: 10.1007/978-3-662-08797-8ISI: 000223863700012ISBN: 978-3-662-08797-8 (electronic)OAI: oai:DiVA.org:kth-47907DiVA: diva2:456573
Note

QC 20111117.

Available from: 2011-11-15 Created: 2011-11-15 Last updated: 2017-04-10Bibliographically approved

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Publisher's full texthttp://www.springer.com/materials/mechanics/book/978-3-540-22031-2

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Mihaescu, MihaiFuchs, Laszlo

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