Kornhaas, Michael ; Sternel, Dörte C. ; Schäfer, Michael (2015)
Efficient numerical simulation of aeroacoustics for low Mach number flows interacting with structures.
In: Computational Mechanics, 55 (6)
Artikel, Bibliographie
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 |
| Art des Eintrags: | Bibliographie |
| Titel: | Efficient numerical simulation of aeroacoustics for low Mach number flows interacting with structures |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Juni 2015 |
| Verlag: | Springer Berlin Heidelberg |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Computational Mechanics |
| Jahrgang/Volume einer Zeitschrift: | 55 |
| (Heft-)Nummer: | 6 |
| URL / URN: | 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. |
| 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) Profilbereiche Profilbereiche > Thermo-Fluids & Interfaces Exzellenzinitiative Exzellenzinitiative > Exzellenzcluster Zentrale Einrichtungen |
| Hinterlegungsdatum: | 21 Jan 2015 15:32 |
| Letzte Änderung: | 03 Jun 2018 21:25 |
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