Examining Passive Flow Control Devices with High Speed Shadowgraph Images around a Mach 1.5 Cavity Flow Field (Postprint)

Abstract

An examination of a rectangular cavity with an L/D of 5.67 was tested at Mach 1.5 with a corresponding Reynolds number of 2.3x106/ft. High speed shadowgraph movies were simultaneously sampled with dynamic pressure sensors at 75 kHz. Fourier analysis was performed on the high speed movies as well as the dynamic pressure data, which resulted in determining the locations of dominant cavity frequencies in the flow field. Four passive flow control devices were tested, two of which have historically preformed well, while two neither reduced the main acoustic tones nor reduced the broadband levels. From the high speed shadowgraph movies, observations are made in the changes in the cavity flow physics when the passive flow control devices are used, and will be discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2012
Accession Number
ADA571002

Entities

People

  • Frank Semmelmayer
  • James E. Grove
  • Mitchell Haverkamp
  • Ryan F. Schmit

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acquisition
  • Air Force
  • Air Force Research Laboratories
  • Boundary Layer
  • Computational Fluid Dynamics
  • Data Acquisition
  • Dynamic Pressure
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Frequency
  • Hypervelocity Flow
  • Reynolds Number
  • Static Pressure
  • Three Dimensional
  • Turbulent Mixing

Readers

  • Acoustics.
  • Fluid Mechanics and Fluid Dynamics.