Large-Eddy Simulation of a Turbulent Buoyant Flame Interacting with Droplets

Xia, J.; Luo, K. H.; Kumar, S.

doi:10.1007/978-3-540-75995-9_26

J. Xia³,
K. H. Luo³ &
S. Kumar⁴

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1 Citations

Abstract

A dynamic large-eddy simulation methodology is applied to a simplified water-spray fire suppression system to investigate droplet effects on a buoyant gas flame. A hybrid Eulerian-Lagrangian approach is employed for the gas-liquid system. Dynamic subgrid models are included to capture the local and unsteady interactions between the two phases. The effectiveness of changing spray angles on combustion suppression has been investigated. The drag effects of droplets cause significant changes to the flow and flame structures. Dense droplets, in particular, can cut through the reaction zones, causing flame extinction. The high temperature regions associated with reaction zones are suppressed by the spray droplets in all cases.

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Authors and Affiliations

Energy Technology Research Group, chool of Engineering Sciences, University of Southampton, Southampton, SO17 1BJ, UK
J. Xia & K. H. Luo
BRE, Garston, Watford, WD25 9XX, UK
S. Kumar

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J. Xia
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K. H. Luo
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S. Kumar
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Editors and Affiliations

China Aerospace Corporation, Science and Technology Council, P.O.Box 849, 100830, Beijing, China
F. G. Zhuang
Institute of Mechanics, Chinese Academy of Science, 100080, Beijing, China
J. C. Li

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Xia, J., Luo, K.H., Kumar, S. (2007). Large-Eddy Simulation of a Turbulent Buoyant Flame Interacting with Droplets. In: Zhuang, F.G., Li, J.C. (eds) New Trends in Fluid Mechanics Research. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75995-9_26

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DOI: https://doi.org/10.1007/978-3-540-75995-9_26
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-75994-2
Online ISBN: 978-3-540-75995-9
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)

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