Influence of Geometry and Heat Release on Counterflow Diffusion Flames: A Navier-Stokes Model
Abstract
A Navier-Stokes simulation of the opposed jet counterflow diffusion flame (CFDF) using a fuel-lean methane jet is described in this work. Plug flow (PLF) and parabolic flow (PAF) jet exit velocity profiles have been used in the simulation, and the results show that changing the velocity profile has a large influence on flame stretch. Flame stretch was also found to be strongly dependent on the jet separation distance. Flame stretch increased as jet separation decreased. Comparing non-reacting and reacting cases indicated that heat release in the flame zone modifies the velocity profile and hence the strain. The flame responded easily to changes in variables such as fuel/air jet velocity ratio, and the nitrogen coflow. The flame was also sensitive to the arrangement of the side walls that encloses the CFDF burner.
Recommended Citation
J. Zhao and K. M. Isaac, "Influence of Geometry and Heat Release on Counterflow Diffusion Flames: A Navier-Stokes Model," International Journal of Computational Fluid Dynamics, vol. 8, no. 4, pp. 287 - 298, Taylor and Francis Group; Taylor and Francis, Jan 1997.
The definitive version is available at https://doi.org/10.1080/10618569708940809
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
CFDF burner; Counterflow diffusion flames; Flame stretch; FLUENT; Navier-Stokes; Opposed jets
International Standard Serial Number (ISSN)
1061-8562
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Taylor and Francis Group; Taylor and Francis, All rights reserved.
Publication Date
01 Jan 1997
