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Refraction of sound by a shear layer - Experimental assessmentAn experimental study was conducted to determine the refraction angle and amplitude changes associated with sound transmission through a circular, open jet shear layer. Both on-axis and off-axis acoustic source locations were used. Source frequency varied from 1 kHz to 10 kHz while freestream Mach number varied from 0.1 to 0.4. The experimental results were compared with an existing refraction theory which was extended to account for off-axis source positions. A simple experiment was also conducted to assess the importance of turbulence scattering between 1 kHz and 25 kHz.
Document ID
19790048114
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schlinker, R. H. (United Technologies Research Center East Hartford, CT, United States)
Amiet, R. K. (United Technologies Research Center East Hartford, Conn., United States)
Date Acquired
August 9, 2013
Publication Date
March 1, 1979
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 79-0628
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aeroacoustics Conference
Location: Seattle, WA
Start Date: March 12, 1979
End Date: March 14, 1979
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
79A32127
Funding Number(s)
CONTRACT_GRANT: NAS1-14973
Distribution Limits
Public
Copyright
Other

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