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Soot Volume Fraction and Temperature Properties of High Liquid Loading Spray Flames.


pdf icon Soot Volume Fraction and Temperature Properties of High Liquid Loading Spray Flames. (525 K)
Wade, R. A.; Sivathanu, Y. R.; Gore, J. P.

Combustion Institute/Central and Western States (USA) and Combustion Institute/Mexican National Section and American Flame Research Committee. Combustion Fundamentals and Applications. Joint Technical Meeting. Proceedings. April 23-26, 1995, San Antonio, TX, Gore, J. P., Editor(s), 791-796 pp, 1995.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Keywords:

combustion; soot; volume; temperature; burning rate; flame length; radiative heat loss

Abstract:

The relationship between burning rate, visible flame length, and sooting properties of spray flames is investigated. Multiwavelength emission/absorption spectroscopy was applied to the measurement of soot volume fractions and temperatures for high liquid loading effervescent atomized flames. The statistics of the emission and absorption data were interpreted in terms of the statistics of the local properties using a novel discrete probability function based deconvolution method. The results show the coupled effects of soot volume fractions and temperature on the radiative heat loss from the spray flames. The effervescent atomized burner configuration allows a study of the radiation properties over a wider range of soot and temperature combinations than that allowed by gas jet flames. Comparison between conventional deconvolution techniques and the present method show that consideration of turbulence/radiation interactions is essential in applying tomography to time varying fields.