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Influence of Jet Angle on Diffusion Flames in Centrifugal Field

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Abstract:

Diffusion combustion of propane and air in a rotational combustor was simulated by three-dimensional numerical model based on FLUENT. Influence of centrifugal field on the flame shapes and temperatures were discussed under various jet angles changing in the plane perpendicular to the rotational axis. The flame is compressed when the value of jet angle θ is less 90°, otherwise, the flame is stretched when |θ|>90°. When θ<90°, the deflection of flame becomes larger with an increase of θ. As contrasted to positive θ cases, the zones of high temperature in combustion chamber corresponding to negative are larger, and the maximal flame temperatures are likewise larger. The negative jet angle is useful to flame stability. External fluid is an important factor influence the distribution of temperature in combustion chamber.

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Periodical:

Applied Mechanics and Materials (Volume 694)

Pages:

181-186

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.694.181

Citation:

Cite this paper

Online since:

November 2014

Authors:

En Yu Wang*, Jing Qin, Xing Xiang, Jin Xiang Wu

Keywords:

Centrifugal Field, Diffusion Flame, Jet Angle, Propane

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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