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A statistical theory of sound radiation from a two-dimensional lined ductA statistical theory coupled with a finite element theory is employed for investigation of sound radiation from a two-dimensional lined duct. The analysis does not utilize duct modes, and can be applied to a non-uniform duct with variable wall liner properties. Numerical results are presented for various shapes of the incident wave. The results are in good agreement with the Wiener-Hopf calculation for cases where the latter can be made.
Document ID
19790062694
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cho, Y. C. (NASA Lewis Research Center Cleveland, Ohio; Joint Institute for Advancement of Flight Sciences, Hampton, Va., United States)
Watson, W. R. (NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1979
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 79-1521
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference
Location: Williamsburg, VA
Start Date: July 23, 1979
End Date: July 25, 1979
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
79A46707
Distribution Limits
Public
Copyright
Other

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