Experiments were carried out to study the heat transfer characteristics of a pair of premixed, laminar, rectangular, butane/air flame jets impinging vertically upon a water-cooled flat plate. The effects of jet-to-jet spacing and the nozzle-to-plate distance on heat transfer were examined. The Reynolds number of the exit flow was 800. The non-dimensional jet-to-jet spacing ranged from 0.9 to 4.1, while the non-dimensional nozzle-to-plate distance varied from 1 to 6. The between-jet interference decreased with increasing jet-to-jet spacing and nozzle-to-plate distance. Both the maximum local and average heat flux occurred at a moderate jet-to-jet spacing of twice effective nozzle diameter, and when the nozzle-to-plate distance was equal to the effective diameter of the nozzle. The heat flux decreased faster along the shorter sides of the slot jets than the longer sides.
Heat Transfer Characteristics of a Pair of Impinging Rectangular Flame Jets
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division November 26, 2002; revision received July 22, 2003. Associate Editor: H. S. Lee.
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Dong, L. L., Leung , C. W., and Cheung, C. S. (November 19, 2003). "Heat Transfer Characteristics of a Pair of Impinging Rectangular Flame Jets ." ASME. J. Heat Transfer. December 2003; 125(6): 1140–1146. https://doi.org/10.1115/1.1621901
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