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Application of a Discontinuous Galerkin Method to Discretize Acoustic Perturbation Equations

Bauer, Marcus and Dierke, Jürgen and Ewert, Roland (2011) Application of a Discontinuous Galerkin Method to Discretize Acoustic Perturbation Equations. AIAA Journal, 49 (5), pp. 898-908. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.J050333 ISSN 0001-1452

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Abstract

Airframe noise of complex geometries, like e.g. high-lift airfoil configurations, may conveniently be computed on unstructured grids. A Discontinuous Galerkin Method (DGM) provides a robust, high-order accurate discretization of systems of partial differential equations like for example the Acoustic Perturbation Equations (APE) even on this type of grid. In particular, a DGM based on Lagrange polynomials may be used, since it enables simple and cheap truncation of flux terms. The goal of the work reported herein is to verify such a DGM. Therefore, the sound field of a monopole situated in a laminar boundary layer is computed. Computations are stable, free from spurious numerical oscillations, and show very good agreement with other computations and with theoretical results.

Item URL in elib:https://elib.dlr.de/73578/
Document Type:Article
Title:Application of a Discontinuous Galerkin Method to Discretize Acoustic Perturbation Equations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bauer, Marcusmarcus.bauer (at) dlr.deUNSPECIFIED
Dierke, Jürgenjuergen.dierke (at) dlr.deUNSPECIFIED
Ewert, Rolandroland.ewert (at) dlr.deUNSPECIFIED
Date:May 2011
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:49
DOI :10.2514/1.J050333
Page Range:pp. 898-908
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0001-1452
Status:Published
Keywords:airframe noise, discontinuous Galerkin method, Acoustic Perturbation Equations
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Quiet Air Traffic (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Bauer, Marcus
Deposited On:16 Jan 2012 13:55
Last Modified:08 Mar 2018 18:41

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