TU Darmstadt / ULB / TUbiblio

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

Kornhaas, Michael and Sternel, Dörte C. and 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) pp. 1143-1154. ISSN 0178-7675
[Article] , (2015)

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

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.

Item Type: Article
Erschienen: 2015
Creators: Kornhaas, Michael and Sternel, Dörte C. and Schäfer, Michael
Title: Efficient numerical simulation of aeroacoustics for low Mach number flows interacting with structures
Language: English
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.

Journal or Publication Title: Computational Mechanics
Volume: 55
Number: 6
Publisher: Springer Berlin Heidelberg
Uncontrolled Keywords: Aeroacoustics; Numerical simulation; Viscous/acoustic splitting; High-resolution scheme; Hierarchical grids
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute of Numerical Methods in Mechanical Engineering (FNB)
Profile Areas
Profile Areas > Thermo-Fluids & Interfaces
Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
Zentrale Einrichtungen
Date Deposited: 21 Jan 2015 15:32
Official URL: http://dx.doi.org/10.1007/s00466-014-1114-1
Export:

Optionen (nur für Redakteure)

View Item View Item