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An Euler solver for the acoustic far‐field prediction of compressible jet flow
Author(s) -
Keiderling Felix,
Obrist Dominik,
Müller Sebastian B.,
Kleiser Leonhard
Publication year - 2007
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200700840
Subject(s) - inviscid flow , euler equations , solver , discretization , euler's formula , large eddy simulation , compressibility , compressible flow , jet (fluid) , noise (video) , context (archaeology) , jet noise , near and far field , flow (mathematics) , physics , mathematics , mechanics , computer science , mathematical analysis , turbulence , mathematical optimization , geology , optics , image (mathematics) , paleontology , artificial intelligence
We report on a highly accurate Euler solver for predicting far‐field jet noise. The solver is based on a framework for Direct Numerical Simulation (DNS) / Large‐Eddy Simulation (LES) that provides the time‐dependent, noise‐generating flow field and the acoustic near‐field. The corresponding far‐field is then computed by solving the inviscid Euler equations in a conservative formulation which is discretized with compact finite differences. Numerical stability can be guaranteed by a spectrally selective filtering procedure developed in the context of subgrid‐scale modeling which is active only in the high wavenumber regime. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)