Rayleigh Imaging of Mach 8 Boundary Layer Flow Around an Elliptic Cone Body

Abstract

This report is the Final Technical Report on AFOSR Grant #F49620-97-1-0181. Work on this project has focused on three areas: (1) Pulse-burst laser system upgrade. (2) The development and characterization of CO2-enhanced Filtered Rayleigh Scattering. (3) Transition studies on flat plates and elliptic cones at Mach 8. The pulse-burst laser has been shown to be an effective illumination source for capturing high-speed boundary layer and high-speed shock wave/boundary layer images. That laser system was upgraded in association with a DURIP equipment grant (#F49620-97-1-0373) in order to produce a high-power, fully integrated laser system that could be used in the Mach 8 facility for the study of the transition dynamics on the 4:1 elliptic cones. Visualizations have been made using single-, double- and multiple-shot Rayleigh scattering, and the key results are summarized in this report.

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Document Details

Document Type
Technical Report
Publication Date
Jan 04, 2000
Accession Number
ADA372445

Entities

People

  • Alexander Smits
  • Richard B. Miles

Organizations

  • Princeton University

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Flow
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Mechanics
  • Rayleigh Scattering
  • Reynolds Number
  • Scattering
  • Shock Waves
  • Turbulence
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Optical Physics and Photonics.
  • Technical Research and Report Writing.

Technology Areas

  • Directed Energy