COMPUTATION OF RADIATION HEAT TRANSFER IN DIESEL COMBUSTION

A theoretical model of radiation heat transfer has been developed. A computation of radiation heat flux at a particular location in the combustion chamber by using the present model requires in-cylinder time- and space-resolved species data and cylinder pressure. From the species data, the burned fuel/air ratio distribution is inferred to compute space-resolved adiabatic flame temperature. For the computation of the spectral emissivity of an isothermal volume of adiabatic temperature containing soot, the Rayleigh-limit expression is used. The refraction indices in the expression are obtained by using the dispersion equations based on the electronic theory encompassing both free and bound electrons. For the spectral emissivity from the gaseous component in the volume, the semi-empirical band model is used. A parametric analysis of radiation heat transfer in diesel combustion is made by using the present model; a prediction by the model qualitatively compares with some of the reported experimental data.

  • Supplemental Notes:
    • A Worldwide View of Diesel Combustion Emissions and Analysis, P-130. International Off-Highway Meeting and Exposition Milwaukee, Wisconsin, September 12-15, 1983.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Chang, S L
    • RHEE, K T
  • Publication Date: 1983-9

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Filing Info

  • Accession Number: 00382412
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Files: HSL, USDOT
  • Created Date: Mar 30 1984 12:00AM