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
Personal Author(s) : Elder,Samuel A.
Report Date : DEC 1972
Pagination or Media Count : 65
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)
Descriptors : (*VIBRATION, ACOUSTIC PROPERTIES), RESONATORS, INTERACTIONS, GAS FLOW, WAVE PROPAGATION, THEORY, MATHEMATICAL MODELS, SOUND GENERATORS
Subject Categories : Acoustics
Distribution Statement : APPROVED FOR PUBLIC RELEASE