Accession Number : ADP009053

Title :   Scalar Dissipation Rate Measurements in Initially Non-Premixed Turbulent Shear Layers Using Rayleigh Imaging,

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Feikema, Douglas A. ; Driscoll, James F.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : The Scalar Dissipation rates have been measured in the developing near fields of three different propane-air turbulent shear layers where lifted flames would be stabilized. Rayleigh imaging was employed to quantify instantaneous propane concentration at various locations, in the near fields of these free shear flows. The measurements resolve the dynamic range of the turbulent spectrum including the Kolmogorov and Batchelor scales except at the injector exit where these scales are not fully resolved. Quantitative instantaneous Rayleigh signatures of the propane concentration and computed instantaneous scalar dissipation rates as well as mean scalar dissipation profiles are determined. (Author)

Descriptors :   *PROPANE, *TURBULENT BOUNDARY LAYER, *DISSIPATION, FLOW FIELDS, CONCENTRATION(COMPOSITION), QUANTITATIVE ANALYSIS, FUEL AIR RATIO, COMBUSTION, JET MIXING FLOW, SPATIAL DISTRIBUTION, COMPUTERIZED SIMULATION, PROBABILITY DISTRIBUTION FUNCTIONS, SOLUTIONS(MIXTURES), COMPARISON.

Subject Categories : Fluid Mechanics
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE