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Jet Screech Noise ComputationThe near-field screech-tone noise of a typical underexpanded circular jet issuing from a sonic nozzle is simulated numerically. The self-sustained feedback loop is automatically established in the simulation. The computed shock-cell structure, acoustic wave length, screech tone frequencies, and sound pressure levels in the near field are in good agreement with existing experimental results.
Document ID
20040000866
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Loh, Ching Y. (Taitech, Inc. Beavercreek, OH, United States)
Hultgren, Lennart S. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
October 1, 2003
Subject Category
Aeronautics (General)
Report/Patent Number
NASA/TM-2003-212626
E-14184
NAS 1.15:212626
Report Number: NASA/TM-2003-212626
Report Number: E-14184
Report Number: NAS 1.15:212626
Funding Number(s)
WBS: WBS 22-708-90-25
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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