Effects of Nozzle Orientation on the Structure and Emissions of Spray Flames

[+] Author and Article Information
A. V. Madanahalli, S. R. Gollahalli

School of Aerospace and Mechanical Engineering, The University of Oklahoma, Norman, OK 73019

J. Energy Resour. Technol 115(3), 183-189 (Sep 01, 1993) (7 pages) doi:10.1115/1.2905991 History: Received November 01, 1991; Revised March 09, 1993; Online April 16, 2008


An experimental study of the effects of the orientation of the liquid fuel stream relative to the air stream from a twin fluid atomizer located in an open-jet wind tunnel is presented. The orientation angle was set at 0 (concurrent), 45, 90, 135, and 180 deg (directly opposed). At 45 and 90 deg, the flame length, the radiation emission, and the concentrations of carbon monoxide, carbon dioxide, nitric oxide, and soot are higher than those at co-flow conditions. At 135 deg, all these quantities decrease markedly from their values at 90 deg and again increase when the fuel and air streams are directly opposed (180 deg). These changes are discussed in terms of the influx of air and recirculation of combustion products into the salient zones of the flame.

Copyright © 1993 by The American Society of Mechanical Engineers
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