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http://dx.doi.org/10.5916/jkosme.2013.37.8.807

A numerical study on soot formation in ethylene diffusion flames under 1g and 0g  

Choi, Jae-Hyuk (Division of Marine System engineering, Korea Maritime and Ocean University)
Park, Sang-Kyun (Department of Power System Engineering, Kunsan National University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.37, no.8, 2013 , pp. 807-815 More about this Journal
Abstract
A numerical study on soot formation in a laminar ethylene diffusion flame at atmospheric pressure was conducted to obtain a better understanding of the effects of buoyancy on sooting flames under 0g and 1g using a gas-phase reaction mechanism and thermal and transport properties. A simple model was employed to predict soot formation, growth and oxidation with interactions between the gas phase chemistry and the soot chemistry taken into account. Results showed that the flames in 0g are much wider than that of 1g because of the thicker diffusion layer and reduction in axial velocity. The reduction in the axial velocity in 0g results in longer residence times, and resulting in greatly enhanced soot volume fraction. And, under zero-gravity, due to the lack of a buoyancy-induced instability, flame instability disappears.
Keywords
Soot formation; Diffusion flame; Buoyancy; Soot volume fraction; Zero-gravity;
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Times Cited By KSCI : 4  (Citation Analysis)
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