Visible structure of buoyant diffusion flames
- Creators
- Zukoski, E. E.
- Cetegen, B. M.
- Kubota, T.
Abstract
Natural gas diffusion flames stabilized on 0.10, 0.19 and 0.50 m. diameter porous bed burners have been studied for heat release rates ranging from 10 to 200 kW. Flame heights were measured from video tape recordings and by eye averaged techniques. The dependence of flame height on a dimensionless heat addition parameter shows a transition for values of the parameter around unity. For flames taller than three burner diameters, the initial diameter of the fire does not affect the length of the flame whereas for short flames, initial geometry becomes important. Another prominent feature of these flames is the presence of large scale axisymmetric structures which are formed close to the burner surface with more or less regular frequency and which rise through the flame region. These structures are responsible for the fluctuations of the flame top and strongly influence the geometry of the flame.
Additional Information
© 1985 Published by Elsevier B.V. Twentieth Symposium (International) on Combustion. Available online 27 April 2007. This work was supported through grant G8-9014 from The Center for Fire Research of The National Bureau of Standards, U.S. Department of Commerce. Authors are thankful to Mr. J. S. Patton andM. Otto who helped in taking the video data andto Drs. J. Rockett and J. G. Quintiere of the Fire Research Center who gave valuable support.Additional details
- Eprint ID
- 21182
- DOI
- 10.1016/S0082-0784(85)80522-1
- Resolver ID
- CaltechAUTHORS:20101206-110336671
- G8-9014
- Center for Fire Research of the National Institute of Standards
- U.S. Department of Commerce
- Created
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2010-12-10Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Guggenheim Jet Propulsion Center
- Other Numbering System Name
- Guggenheim Jet Propulsion Center