Burke–Schumann Flame with Streamwise and Preferential Diffusion
- 1 May 1984
- journal article
- research article
- Published by Taylor & Francis in Combustion Science and Technology
- Vol. 37 (1-2) , 21-46
- https://doi.org/10.1080/00102208408923744
Abstract
The classical diffusion flame model of Burke and Schumann is extended to include the effects of both streamwise and preferential diffusion. The study first identifies a Lewis-number-weighted coupling function as the proper one to usc in formulations involving non-unity Lewis numbers. A perturbation technique is then developed for the realistic situation of ncar-unity Lewis number flows. Results show that, depending on the effective Lewis numbers of fuel and oxidizer, the flame temperature may vary either monotonically or non-monotonically along the flame sheet, and thereby suggesting the possibilities of tip opening, and tip intensification, as well as partial and complete flame blow-off.Keywords
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