Accession Number : ADA297957

Title :   Direct Numerical Simulation of Acoustic-Flow Interactions in Solid Rocket Motors.

Descriptive Note : Final rept. 1 Aug 92-15 Jan 95,

Corporate Author : COLORADO UNIV AT BOULDER CENTER FOR COMBUSTION RESEARCH

Personal Author(s) : Mu, S. ; Hevert, S. ; Mahalingam, S.

PDF Url : ADA297957

Report Date : 07 JUN 1995

Pagination or Media Count : 45

Abstract : A summary of research on our studies of acoustic-mean flow interactions in solid rocket motors is presented in this Final Technical Report. Two-dimensional, time-dependent solutions of the compressible Navier-Stokes equations have been obtained in a rectangular duct under conditions of monochromatic acoustic forcing. The existence of a cut-off frequency, the appearance of oblique waves, and the behavior at resonance compare well with previously published analytical predictions. The thickness of the acoustic boundary layer and its response to imposed disturbances are also in good agreement with theory. The code is being modified to include nonpremixed combustion, which will allow studying acoustic interactions with a chemically reactive mean flow. (MM)

Descriptors :   *ACOUSTIC WAVES, *COMBUSTION, *SOUND PRESSURE, *SOLID PROPELLANT ROCKET ENGINES, MATHEMATICAL MODELS, COMPRESSIBLE FLOW, CHEMICAL REACTIONS, NAVIER STOKES EQUATIONS.

Subject Categories : Acoustics
      Combustion and Ignition
      Solid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE