Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8713
Title: Numerical simulation of open swirl-stabilized premixed combustion
Authors: Zhao, QW
Chan, CK 
Zhao, HF
Keywords: Numerical simulation
Premixed flame
Swirl-stabilized flame
Issue Date: 2004
Publisher: Elsevier
Source: Fuel, 2004, v. 83, no. 11-12, p. 1615-1623 How to cite?
Journal: Fuel 
Abstract: An open swirl-stabilized turbulent premixed flame is studied numerically. This study provides a better understanding of the flame properties by simulating the flow field, combustion and heat transfer. Spalding's stretch-cut-slide model is extended to determine the mixing controlled fuel burning rate. Although the flame is stabilized by swirl, the flame zone is found to be free of swirl. Simulations reveal that flame stabilization relies on flow divergence instead of re-circulation although a re-circulation zone is located downstream of the flame. Also, compared with non-reacting swirling jets, the re-circulation zone becomes wider and longer under combustion. Apart from an increase in adverse pressure gradient, the decrease in turbulent diffusion tends to increase re-circulation in the open system. The strong impingement between the swirling jet and reverse flow makes the flame planar.
URI: http://hdl.handle.net/10397/8713
ISSN: 0016-2361
EISSN: 1873-7153
DOI: 10.1016/j.fuel.2004.02.003
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