Imperial College London
Alternate

ProfessorWilliamJones

Faculty of Engineering, Department of Mechanical Engineering

Professor
 
 
 
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Contact

 

+44 (0)20 7594 7037w.jones

 
 
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Assistant

 

Ms Fabienne Laperche +44 (0)20 7594 7033

 
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Location

 

607City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Jones:2017:10.1016/j.combustflame.2017.08.019,
author = {Jones, WP and marquis, A and Noh, D},
doi = {10.1016/j.combustflame.2017.08.019},
journal = {Combustion and Flame},
pages = {277--298},
title = {An investigation of a turbulent spray flame using Large Eddy Simulation with a stochastic breakup model},
url = {http://dx.doi.org/10.1016/j.combustflame.2017.08.019},
volume = {186},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A computational investigation of a turbulent methanol/air spray flame in which a poly-dispersed droplet distribution is achieved through the use of a pressure-swirl atomiser (also known as a simplex atomiser) is presented. A previously formulated stochastic approach towards the modelling of the breakup of droplets in the context of Large Eddy Simulation (LES) is extended to simulate methanol/air flames arising from simplex atomisers. Such atomisers are frequently used to deliver fine droplet distributions in both industrial and laboratory configurations where they often operate under low-pressure drop conditions. The paper describes improvements to the breakup model that are necessary to correctly represent spray formation from simplex atomisers operated under low-pressure drop conditions. The revised breakup model, when used together with the existing stochastic models for droplet dispersion and evaporation, is shown to yield simulated results for a non-reacting spray that agree well with the experimentally measured droplet distribution, spray dynamics and size-velocity correlation. The sub-grid scale (sgs) probability density function (pdf) approach in conjunction with the Eulerian stochastic field method are employed to represent the unknown interaction between turbulence and chemistry at the sub-filter level while a comprehensive kinetics model for methanol oxidation with 18 chemical species and 84 elementary steps is used to account for the gas-phase reaction. A qualitative comparison of the simulated OH images to those obtained from planar laser-induced fluorescence (PLIF) confirms that the essential features of this turbulent spray flame are well captured using the pdf approach. They include the location of the leading-edge combustion (or lift-off height) and the formation of a double reaction zone due to the polydisperse spray. In addition, the influence of the spray flame on the structure of the reacting spray in respect of the mean droplet diameters and sp
AU  - Jones,WP
AU  - marquis,A
AU  - Noh,D
DO  - 10.1016/j.combustflame.2017.08.019
EP  - 298
PY  - 2017///
SN  - 0010-2180
SP  - 277
TI  - An investigation of a turbulent spray flame using Large Eddy Simulation with a stochastic breakup model
T2  - Combustion and Flame
UR  - http://dx.doi.org/10.1016/j.combustflame.2017.08.019
UR  - https://www.sciencedirect.com/science/article/pii/S0010218017303164
UR  - http://hdl.handle.net/10044/1/50447
VL  - 186
ER  -
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