Measurements and predictions of scalar dissipation in turbulent jet flames

R. W. Dibble*, W. Kollmann, R. W. Schefer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Scalar dissipation rates in high-Reymolds number turbulent nonpremixed jets have been investigated experimentally and theoretically. Both a nonreacting propane jet and a reacting jet mixture of hydrogen and argon were studied. The scalar dissipation rates were determined experimentally by using an optical multichannel analyzer to measure the instantaneous distribution of Rayleigh-scattered light along a beam from a high energy pulsed dye laser. The time-resolved spatial distribution of the conserved scalar and the local gradients were then calculated from the Rayleigh-scattered light intensity distribution. A second-order closure numerical model including the transport equations for scalar dissipation is presented. The effect of density fluctuations on the scalar dissipation is analyzed and calculations are compared with experimental results.

Original languageEnglish (US)
Pages (from-to)345-352
Number of pages8
JournalSymposium (International) on Combustion
Issue number1
StatePublished - 1985
Externally publishedYes

ASJC Scopus subject areas

  • General Chemical Engineering
  • Mechanical Engineering
  • Energy Engineering and Power Technology
  • Fluid Flow and Transfer Processes
  • Fuel Technology
  • Physical and Theoretical Chemistry


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