Multiangular Scanning Absorption Techniques for Three Dimensional Combustion Diagnostics.

Abstract

This program explored the potential of absorption techniques for low ppm, real time three-dimensional combustion diagnostics. Convolution, Fourier transforms and iterative algorithms have already been proven in x-ray absorption tomography and interferometric applications. They have been tested and compared for their ability to determine typical pollutant and radical concentrations as they appear in flames or exhausts. The effect of the number of scans has been analyzed for parallel beams. A satisfactory trade off was shown to exist between accuracy and the number of viewing angles. The potential of this method was demonstrated in the laboratory.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1982
Accession Number
ADA133811

Entities

People

  • Robert Goulard

Organizations

  • George Washington University

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Beam Steering
  • Chemical Elements
  • Combustion
  • Data Processing
  • Detectors
  • Engineering
  • Flow Fields
  • Fluid Mechanics
  • Laser Beams
  • Lasers
  • Measurement
  • Physics Laboratories
  • Steering
  • Temperature Gradients
  • Three Dimensional
  • Two Dimensional
  • X Rays

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Image Processing and Computer Vision.
  • Spectroscopy.