Simultaneous planar measurements of temperature and soot volume fraction in a turbulent non-premixed jet flame

S. M. Mahmoud, G. J. Nathan, P. R. Medwell, B. B. Dally, Z. T. Alwahabi

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

New measurements are reported of the soot-temperature interaction in a turbulent non-premixed ethylene-hydrogen-nitrogen attached jet flame with an exit Reynolds number of 15,000. Spatially resolved, two-dimensional temperature and soot volume fractions were measured simultaneously using non-linear excitation regime two-line atomic fluorescence (NTLAF) and laser-induced incandescence (LII) techniques, respectively. The soot-temperature correlation is presented and analyzed through representative images of single-shot simultaneous temperature and soot volume fraction at various heights, as well as through joint probability density functions (PDFs) of soot volume fraction (SVF) and temperature. A strong influence of temperature on SVF is found, which is consistent with current understanding of their inter-dependence. Axial and radial plots of mean SVF categorized into temperature bands of 300 K are also reported. These reveal that, while the mean SVF is a function of both temperature and axial distance, the joint PDF depends only weakly on radial distance. The study highlights the value of the simultaneous measurements for understanding soot behavior in a turbulent environment and for model development and validation.
Original languageEnglish (US)
Pages (from-to)1931-1938
Number of pages8
JournalProceedings of the Combustion Institute
Volume35
Issue number2
DOIs
StatePublished - Jan 1 2015
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

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