Motivated by heat transfer and environmental concerns, a study of flame radiation and soot particulate emission is reported for partial premixing in low strain-rate methane counterflow flames. Temperature, concentration, and soot volume fraction distributions were measured along the stagnation streamline for progressive addition of oxygen to methane. These measurements along with an optically thin model for soot and gas radiation were used to study the effect of partial premixing on flame radiation and soot emission. It was found that with progressive partial premixing, the peak soot loading and the thickness of the soot zone first decreased and then increased, and while the gas radiation was enhanced, the gas radiative fraction (gas radiation per unit chemical energy release) showed a systematic decrease. The net radiative fraction , however, first decreased and then increased. A configuration with the soot zone spatially entrapped between the premixed and non-premixed reaction zones was experimentally found. This flame configuration has the potential to enhance radiative heat transfer while simultaneously reducing soot and emissions.
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e-mail: Hemant_Mungekar@amat.com
e-mail: aatreya@umich.edu
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Flame Radiation and Soot Emission From Partially Premixed Methane Counterflow Flames
Hemant P. Mungekar,
Hemant P. Mungekar
Department of Mechanical Engineering,
e-mail: Hemant_Mungekar@amat.com
University of Michigan
, Ann Arbor, MI 48109
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Arvind Atreya
Arvind Atreya
Department of Mechanical Engineering,
e-mail: aatreya@umich.edu
University of Michigan
, Ann Arbor, MI 48109
Search for other works by this author on:
Hemant P. Mungekar
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109e-mail: Hemant_Mungekar@amat.com
Arvind Atreya
Department of Mechanical Engineering,
University of Michigan
, Ann Arbor, MI 48109e-mail: aatreya@umich.edu
J. Heat Transfer. Apr 2006, 128(4): 361-367 (7 pages)
Published Online: October 23, 2005
Article history
Received:
October 28, 2004
Revised:
October 23, 2005
Citation
Mungekar, H. P., and Atreya, A. (October 23, 2005). "Flame Radiation and Soot Emission From Partially Premixed Methane Counterflow Flames." ASME. J. Heat Transfer. April 2006; 128(4): 361–367. https://doi.org/10.1115/1.2165204
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