Modeling of radiation from luminous turbulent diffusion flames

Ian M. Kennedy, Wolfgang Kollmann, Olaf Schäfer

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

1 Scopus citations


A PDF (probability density function) code has been applied to the calculation of the spectral radiation intensity emitted from a luminous turbulent diffusion flame. The code included a simple model of soot formation that was based on a rate equation for soot nucleation and growth. The rates of these processes were derived empirically and were employed in an equation for the soot volume fraction. The other scalars that were considered were the mixture fraction and the enthalpy. The enthalpy equation included a term to account for the radiative heat loss. Temperatures were derived from a constrained equilibrium chemistry assumption. The radiation intensity in the wavelength region from 1 to 4 pm was determined for a beam across the diameter of the flame at various axial locations. The mean spectral intensities compared well to measurements in a buoyant turbulent ethene diffusion flame. The pdfs of radiation intensity showed that the variance of intensity was greatest for the shortest wavelengths.

Original languageEnglish (US)
Title of host publication35th Aerospace Sciences Meeting and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages11
StatePublished - 1997
Event35th Aerospace Sciences Meeting and Exhibit, 1997 - Reno, United States
Duration: Jan 6 1997Jan 9 1997


Other35th Aerospace Sciences Meeting and Exhibit, 1997
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering


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