The Numerical Solution of Pressure Oscillations in an Open Cavity

Abstract

Open cavities on aircraft exposed to high speed flow, such as bomb bays can give rise to intense self-induced pressure oscillations. The amplitude of these oscillations, under certain flight conditions, can cause structural damage. Substantial experimental and analytical efforts have investigated these pressure fluctuations, resulting in some understanding of the complex interaction of the external shear layer and cavity acoustical disturbances. However, no numerical computations have been obtained for the complete governing fluid mechanical equations. The purpose of this study is to obtain numerical solutions of the Navier-Stokes equations for an open cavity in order to provide a new tool for the analysis of this phenomenon.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1982
Accession Number
ADP000324

Entities

People

  • J. S. Shang
  • W. L. Hankey

Organizations

  • Flight Dynamics Laboratory

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Equations
  • Experimental Data
  • Flow
  • Free Stream
  • Frequency
  • Layers
  • Mach Number
  • Measurement
  • Navier Stokes Equations
  • Pressure Distribution
  • Shock Waves
  • Standing Waves
  • Static Pressure
  • Traveling Waves
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Explosive Engineering.
  • Fluid Dynamics.