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Accession Number:
AD0754422
Title:
Fluctuating Pipe Pressures Produced by Modulated Jet Flow.
Descriptive Note:
Technical rept.,
Corporate Author:
NAVAL ACADEMY ANNAPOLIS MD MICHELSON PHYSICAL LAB
Report Date:
1972-12-01
Pagination or Media Count:
65.0
Abstract:
The precise way in which sound pressure fluctuations are produced by the interaction of a jet and resonator remains in dispute. The report suggests that two current theories for the sound production mechanism may be comprehended by a more general approach, based on conservation of linear momentum and conservation of mass. Equating force per unit area exerted by the jet on a control volume containing the mixing region to the difference in pressure along the pipe axis leads to an expression for acoustic particle velocity in the standing wave as a function of the jet driving flow spectrum. Author
Distribution Statement:
APPROVED FOR PUBLIC RELEASE