Applications of Rayleigh Scattering to Turbulent Flows with Heat Transfer and Combustion.

Abstract

Further development of instrumentation and data processing techniques to improve Rayleigh scattering and laser doppler anemometry (LDA) as diagnostic techniques in turbulent flows with combustion has continued. A computerized disk operated data acquistion system with 8 channels of 12 bit A/D conversion, a CRT terminal with graphics, and a line printer for permanent copy output has been completed. The data acquisition system was used to study the effect of H2-air combustion on induced turbulence in a heated boundary layer. Mean, rms fluctuations, probability density functions and autocorrelation were obtained for density and velocity. Three modes of combustion were indicated: 1) surface reaction, 2) surface reaction combined with gas phase reaction, 3) flame-like structure at the edge of the boundary layer.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1979
Accession Number
ADA069981

Entities

People

  • Frank Robben
  • Lawrence Talbot

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Boundary Layer
  • Combustion
  • Computer Programs
  • Data Acquisition
  • Data Processing
  • Engineering
  • Flame Propagation
  • Flow
  • Flow Fields
  • Heat Transfer
  • Layers
  • Mechanical Engineering
  • Rayleigh Scattering
  • Scattering
  • Surface Reactions
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Directed Energy