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Efficient numerical simulation of aeroacoustics for low Mach number flows interacting with structures

Kornhaas, Michael ; Sternel, Dörte C. ; Schäfer, Michael :
Efficient numerical simulation of aeroacoustics for low Mach number flows interacting with structures.
[Online-Edition: http://dx.doi.org/10.1007/s00466-014-1114-1]
In: Computational Mechanics, 55 (6) S. 1143-1154. ISSN 0178-7675
[Artikel] , (2015)

Offizielle URL: http://dx.doi.org/10.1007/s00466-014-1114-1

Kurzbeschreibung (Abstract)

An integrated hybrid approach for the numerical simulation of aeroacoustics at low Mach numbers is presented. The method is based on a viscous/acoustic splitting. The turbulent incompressible background flow is computed with large eddy simulation, based on the incompressible Navier-Stokes equations, whereas the acoustics are computed from linearized Euler equations with a high-resolution scheme. The focus is on the numerical efficiency of the approach. To accelerate the computations, hierarchical grids and a frozen fluid approach for the acoustics are employed and investigated. For validation and the investigation of the numerical efficiency and accuracy the sound emission of a plate in the turbulent wake of a circular cylinder is employed as a test case.

Typ des Eintrags: Artikel
Erschienen: 2015
Autor(en): Kornhaas, Michael ; Sternel, Dörte C. ; Schäfer, Michael
Titel: Efficient numerical simulation of aeroacoustics for low Mach number flows interacting with structures
Sprache: Englisch
Kurzbeschreibung (Abstract):

An integrated hybrid approach for the numerical simulation of aeroacoustics at low Mach numbers is presented. The method is based on a viscous/acoustic splitting. The turbulent incompressible background flow is computed with large eddy simulation, based on the incompressible Navier-Stokes equations, whereas the acoustics are computed from linearized Euler equations with a high-resolution scheme. The focus is on the numerical efficiency of the approach. To accelerate the computations, hierarchical grids and a frozen fluid approach for the acoustics are employed and investigated. For validation and the investigation of the numerical efficiency and accuracy the sound emission of a plate in the turbulent wake of a circular cylinder is employed as a test case.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Computational Mechanics
Band: 55
(Heft-)Nummer: 6
Verlag: Springer Berlin Heidelberg
Freie Schlagworte: Aeroacoustics; Numerical simulation; Viscous/acoustic splitting; High-resolution scheme; Hierarchical grids
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet für Numerische Berechnungsverfahren im Maschinenbau (FNB)
Hinterlegungsdatum: 21 Jan 2015 15:32
Offizielle URL: http://dx.doi.org/10.1007/s00466-014-1114-1
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