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On the simulation of trailing edge noise with a hybrid LES/APE method

Ewert, R. and Schröder, W. (2004) On the simulation of trailing edge noise with a hybrid LES/APE method. Journal of Sound and Vibration, 270 (1), pp. 509-524.

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A hybrid method is applied to predict trailing edge noise based on a large eddy simulation (LES) of the compressible flow problem and acoustic perturbation equations (APE) for the time-dependent simulation of the acoustic field. The acoustic simulation in general considers the mean flow convection and refraction effects such that the computational domain of the flow simulation has to comprise only the significant acoustic source region. Using a modified rescaling method for the prediction of the unsteady turbulent inflow boundary layer, the LES just resolves the flow field in the immediate vicinity of the trailing edge. The linearized APE completely prevent the unbounded growth of hydrodynamic instabilities in critical mean flows.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:On the simulation of trailing edge noise with a hybrid LES/APE method
AuthorsInstitution or Email of Authors
Schröder, W.RWTH Aachen
Journal or Publication Title:Journal of Sound and Vibration
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 509-524
Keywords:LES, APE, trailing edge noise
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Concepts & Integration
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:28 Nov 2005
Last Modified:14 Jan 2010 19:46

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