An Analytical Examination of the Combustion of a Turbulent Jet in an Environment of Air Containing a Premixed Fuel or a Diluent

[+] Author and Article Information
P. Wierzba, G. A. Karim, I. Wierzba

Department of Mechanical Engineering, The University of Calgary, Calgary, Alberta, Canada T2N 1N4

J. Energy Resour. Technol 117(3), 234-238 (Sep 01, 1995) (5 pages) doi:10.1115/1.2835346 History: Received March 12, 1992; Revised April 27, 1995; Online January 22, 2008


A simple analytical model for the mixing and combustion of an axisymmetric turbulent gaseous fuel jet discharging into a co-flowing streaming gaseous environment of an auxiliary fuel and/or a diluent homogeneously mixed with air is presented. A number of gaseous fuels and diluents are considered. It is shown that the combustion characteristics of a fuel jet can be modified significantly by the presence of a relatively small amount of a fuel in the surrounding air at concentrations well below the corresponding local flammability limits. Correlative procedures are presented for estimating changes in the flame length, the size of the combustion zone, and the blowout limits with changes in the type and concentration of the fuel in the surroundings. Predicted values showed generally good agreement with the corresponding experimental values.

Copyright © 1995 by The American Society of Mechanical Engineers
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