Fractal Image Compression of Rayleigh, Raman, LIF and LDV Data in Turbulent Reacting Flows

Abstract

Experiments and analysis were completed concerning a diagnostic program on a two dimensional subsonic wind tunnel with a backward facing step and combustion. Combustibles were introduced as a hydrogen-argon mixture from a porous floor behind the step. Completed were LDV and Raman spectroscopy for mean and rms velocity (two components) and temperature. Analysis used a two equation turbulence model which predicted the gross features of the flow but somewhat underpredicted reattachment length. Two dimensional and three dimensional fractal interpolation techniques were developed for reduction of noise to signal ratio in the complex turbulent flow. New methods of fractal analysis of time series were developed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1991
Accession Number
ADA246960

Entities

People

  • Jechial I. Jagoda
  • Warren C. Strahle

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Chemical Reactions
  • Combustion
  • Combustion Products
  • Computational Fluid Dynamics
  • Creep
  • Flow Fields
  • Fluid Mechanics
  • Geometry
  • Heat Transfer
  • Lasers
  • Measurement
  • Raman Spectroscopy
  • Turbulence
  • Turbulent Diffusion
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.