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Slat Noise Prediction using Discontinuous Galerkin Method and Stochastic Turbulent Sound Source

Bauer, Marcus and Ewert, Roland (2010) Slat Noise Prediction using Discontinuous Galerkin Method and Stochastic Turbulent Sound Source. 16th AIAA/CEAS Aeroacoustics Conference, 07.--09. Juni 2010, Stockholm, Schweden.

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Abstract

A promising way to predict airframe noise is the numerical solution of the Acoustic Perturbation Equations (APE) with the help of the Discontinuous Galerkin Method (DGM) and the Fast Random Particle Mesh (FRPM) method. The latter stochastically computes the turbulent source term of the APE, while the DGM reliably provides their spatial discretization, even on a flexible unstructured grid. The goal of the current work is to compute broadband slat noise of two different high-lift airfoil configurations in two dimensions with this approach. The dependency of the result on the resolution of both the FRPM- as well as the DG-grid is analysed, and the parameter sensitivity of the FRPM method is investigated. Furthermore, computed sound pressure spectra are compared to measured spectra, and computational times are examined.

Item URL in elib:https://elib.dlr.de/73909/
Document Type:Conference or Workshop Item (Paper)
Additional Information:AIAA-Paper 2010-3832
Title:Slat Noise Prediction using Discontinuous Galerkin Method and Stochastic Turbulent Sound Source
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bauer, Marcusmarcus.bauer (at) dlr.deUNSPECIFIED
Ewert, Rolandroland.ewert (at) dlr.deUNSPECIFIED
Date:June 2010
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Discontinuous Galerkin Method Slat Noise Stochastic Turbulent Sound Source
Event Title:16th AIAA/CEAS Aeroacoustics Conference
Event Location:Stockholm, Schweden
Event Type:Conference
Event Dates:07.--09. Juni 2010
Organizer:AIAA/CEAS
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 09:54
Last Modified:31 Jul 2019 19:34

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