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Non-linear propagation in near sonic flowsA nonlinear analysis is developed for sound propagation in a variable-area duct in which the mean flow approaches choking conditions. A quasi-one-dimensional model is used and the nonlinear analysis represents the acoustic disturbance as a sum of interacting harmonics. The numerical procedure is stable for cases of strong interaction and is able to integrate through the throat region without any numerical instability.
Document ID
19810047239
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nayfeh, A. H.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Kelly, J. J.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Watson, L. T.
(Virginia Polytechnic Institute and State University Blacksburg, Va., United States)
Date Acquired
August 11, 2013
Publication Date
April 8, 1981
Publication Information
Publication: Journal of Sound and Vibration
Volume: 75
Subject Category
Acoustics
Accession Number
81A31643
Funding Number(s)
CONTRACT_GRANT: NSG-1573
Distribution Limits
Public
Copyright
Other

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