Mixture fraction measurements via WMS/ITAC in a laminar diffusion flame

Shin Juh Chen, Joel A. Silver, Werner Dahm, Nancy D. Piltch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


A new approach to determine the mixture fraction at all positions in a flame, using experimental measurements of as few as a single species, was presented. This approach combined measurements using diode laser wavelength modulation spectroscopy (WMS) and a method termed iterative temperature with assumed chemistry (ITAC). The basic WMS/ITAC method was presented and validated for a laminar diffusion flame in a Wolfhard-Parker burner. Methane concentration and temperature were measured and compared to published and ITAC results. There was good agreement between the direct measurements and ITAC results. These results agreed well with published results, considering the differences in ambient pressure. Effects, including differential diffusion, radiative heat loss, and finite-rate chemistry, on the combustion models were addressed and found to be important for the simple laminar diffusion flame. Extension of WMS/ITAC to more complex combustion systems, which include turbulence and non-equilibrium chemistry were suggested. This is an abstract of a paper presented at the 29th International Symposium on Combustion (Sapporo, Japan 7/21/2002).

Original languageEnglish (US)
Title of host publicationProceedings of the Combustion Institute
EditorsJ.H. Chen, M.D. Colket
Number of pages7
Volume29 II
StatePublished - 2002
Externally publishedYes
EventTwenty-Ninth International Symposium on Combustion - Sapporo, Japan
Duration: Jul 21 2002Jul 25 2002


OtherTwenty-Ninth International Symposium on Combustion

ASJC Scopus subject areas

  • Automotive Engineering


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