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

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)

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Document Details

Document Type
Technical Report
Publication Date
Jun 07, 1995
Accession Number
ADA297957

Entities

People

  • S. Hevert
  • S. Mahalingam
  • S. Mu

Organizations

  • University of Colorado Boulder

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Refraction
  • Acoustic Velocity
  • Acoustic Waves
  • Acoustics
  • Boundary Layer
  • Combustion
  • Computational Fluid Dynamics
  • Differential Equations
  • Equations
  • Frequency
  • Layers
  • Mach Number
  • Mechanical Engineering
  • Navier Stokes Equations
  • Rocket Engines
  • Simulations
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion science or combustion engineering.