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Large-Eddy Simulation of a High Reynolds Number Flow Around a Cylinder Including Aeroacoustic PredictionsThe dynamic subgrid-scale model is employed in large-eddy simulations of flow over a cylinder at a Reynolds number, based on the diameter of the cylinder, of 90,000. The Centric SPECTRUM(trademark) finite element solver is used for the analysis. The far field sound pressure is calculated from Lighthill-Curle's equation using the computed fluctuating pressure at the surface of the cylinder. The sound pressure level at a location 35 diameters away from the cylinder and at an angle of 90 deg with respect to the wake's downstream axis was found to have a peak value of approximately 110 db. Slightly smaller peak values were predicted at the 60 deg and 120 deg locations. A grid refinement study suggests that the dynamic model demands mesh refinement beyond that used here.
Document ID
19970029064
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Spyropoulos, Evangelos T.
(Centric Engineering Systems Santa Clara, CA United States)
Holmes, Bayard S.
(Centric Engineering Systems Santa Clara, CA United States)
Date Acquired
August 17, 2013
Publication Date
June 1, 1997
Publication Information
Publication: Second Computational Aeroacoustics (CAA) Workshop on Benchmark Problems
Subject Category
Acoustics
Accession Number
97N27772
Funding Number(s)
CONTRACT_GRANT: NAS1-20584
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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