PLIF Visualization and Quantitative Mixing Measurements of a Supersonic Injection Nozzle

Abstract

Planar Laser-Induced Fluorescence (PLIF) was used to visualize the flow of a supersonic nozzle with a single supersonic injector. The nozzle simulates Chemical Oxygen Iodine Laser (COIL) flow conditions with non-reacting, cold flows, where the injected flow is seeded with iodine. A laser sheet near 565nm excites the iodine, and the florescence is imaged with a gated, CCD camera. Streamwise and semi-spanwise (oblique-view) images were taken, where the presence of injected flow is highlighted. With these images, the flow structures are identifiable and the mixing quality between the primary and injected flow can be quantitatively measured. Histograms of image ensembles were taken at varying downstream locations to quantify the mixing quality of the flow.

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Document Details

Document Type
Technical Report
Publication Date
Oct 16, 2006
Accession Number
ADA471563

Entities

People

  • C. R. Truman
  • Carrie A. Noren
  • Gordon D. Hager
  • Peter V. Vorobieff
  • Timothy J. Madden

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Chemical Oxygen Iodine Lasers
  • Creep
  • Fluorescence
  • Laser Applications
  • Laser Induced Fluorescence
  • Lasers
  • Nozzles
  • Supersonic Nozzles

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Image Processing and Computer Vision.
  • Molecular Photonics/Laser Physics

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Hypersonics
  • Hypersonics - Hypersonic Flow