An Experimental Investigation of Pressure Oscillations in Two- Dimensional Open Cavities

Abstract

An experimental study was conducted to determine the characteristics of the pressure oscillations in a small two-dimensional cavity exposed to tangential air flow. Various cavity configuration changes, involving the shape of the leading and trailing edge, were investigated to determine the relative capability to suppress the resonance in the cavity response. Five airflow Mach numbers (0.5, 0.6, 1.0, 1.3, 1.5) were used to investigate the Mach-response relationship. Two cavity lengths were considered (2 and 4 1/4 inches). The depth of the cavities was kept constant at one inch. Fluctuating pressure recordings and schlieren photographs were made of each test.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1975
Accession Number
ADA023355

Entities

People

  • Michael F. Marquardt

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Air Force
  • Boundary Layer
  • Dynamic Pressure
  • Fluid Dynamics
  • Fluid Mechanics
  • Geometry
  • Measurement
  • Photographs
  • Physics Laboratories
  • Pressure Measurement
  • Resonant Frequency
  • Reynolds Number
  • Stagnation Point
  • Strouhal Number
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture