Accession Number : ADP004527

Title :   Acoustic Energy Exchange in Sheared Meanflows,

Corporate Author : AIR FORCE ROCKET PROPULSION LAB EDWARDS AFB CA

Personal Author(s) : Baum,J. D. ; Levine,J. N.

Report Date : OCT 1984

Pagination or Media Count : 8

Abstract : The objective of the present research project is to seek an understanding of the physical mechanisms by which energy is exchanged between the mean and acoustic flow fields in resonant combustion chambers (in particular, solid rocket motors); processes that have been the subject of much speculation in the past, but which have been thoroughly investigated. Specifically, the phenomena to be investigated are the interaction between the acoustic field in a chamber and a free shear layer (i.e., vortex shedding) and the so called flow turning effect. The present paper will detail efforts, to date, to develop the computational capability to properly address such problems and will report progress made toward the understanding of flow turning and acoustic refraction.

Descriptors :   *VORTEX SHEDDING, *ACOUSTIC WAVES, *COMBUSTION CHAMBERS, GAS FLOW, ENERGY TRANSFER, ACOUSTIC FIELDS, SHEAR PROPERTIES, FLOW FIELDS, SOLID PROPELLANT ROCKET ENGINES, FINITE DIFFERENCE THEORY, ACOUSTIC REFRACTION, NAVIER STOKES EQUATIONS, COMBUSTION, SYMPOSIA

Distribution Statement : APPROVED FOR PUBLIC RELEASE