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CAA for Jet Noise Physics: Issues and Recent ProgressDr. Mankbadi summarized recent CAA results. Examples of the effect of various boundary condition schemes on the computed acoustic field, for a point source in a uniform flow, were shown. Solutions showing the impact of inflow excitations on the result were also shown. Results from a large eddy simulation, using a fourth-order MacCormack scheme with a Smagorinsky sub-grid turbulence model, were shown for a Mach 2.1 unheated jet. The results showed that the results were free from spurious modes. Results were shown for a Mach 1.4 jet using LES in the near field and the Kirchhoff method for the far field. Predicted flow field characteristics were shown to be in good agreement with data and predicted far field directivities were shown to be in qualitative agree with experimental measurements.
Document ID
20040201012
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Mankbadi, Reda
(Embry-Riddle Aeronautical Univ. Daytona Beach, FL, United States)
Date Acquired
September 7, 2013
Publication Date
November 1, 2001
Publication Information
Publication: Proceedings of the Jet Noise Workshop
Subject Category
Physics (General)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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