Large-eddy simulation of a turbulent buoyant plume interacting with droplets


Xia, J., Luo, K.H. and Kumar, S. (2007) Large-eddy simulation of a turbulent buoyant plume interacting with droplets. In, New Trends in Fluid Mechanics Research. 5th International Conference on Fluid Mechanics Beijing, China, Tsinghua University Press and Springer, 103-106.

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Description/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.

Item Type: Book Section
ISBNs: 9787302158943 (hardback)
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Thermofluids and Superconductivity
ePrint ID: 48571
Date Deposited: 01 Oct 2007
Last Modified: 27 Mar 2014 18:32
Publisher: Tsinghua University Press and Springer
URI: http://eprints.soton.ac.uk/id/eprint/48571

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