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.
|Title:||On the simulation of trailing edge noise with a hybrid LES/APE method|
|Journal or Publication Title:||Journal of Sound and Vibration|
|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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