LES of the Cambridge Stratified Swirl Burner using a Sub-grid pdf Approach
File(s)
Published version
Author(s)
Brauner, T
Jones, WP
Marquis, AJ
Type
Conference Paper
Abstract
The sub-grid scale probability density function equation is rearranged in order to separate the resolved and sub-grid-scale (sgs) contributions to the sgs mixing term. This allows modelling that is consistent with the limiting case of negligible sub-grid scale variations, a property required for applications to laboratory premixed flames. The new method is applied to the Cambridge Stratified Swirl Burner for 6 operating conditions, 2 isothermal and 4 burning, with varying degrees of swirl and mixture stratification. The simulations are performed with the Large Eddy Simulation (LES) code BOFFIN in which the modelled pdf transport equation is solved using the Eulerian stochastic field method. Eight stochastic fields are used to account for the influence of the sub-grid fluctuations and the chemistry is modelled with a reduced version of the GRI 3.0 mechanism for methane involving 19 species and 15 reaction steps. The simulated velocities for both the isothermal and burning cases show good agreement with the experimental data. The measured temperature and major species profiles are also reproduced to a good accuracy.
Date Issued
2016-03-08
Date Acceptance
2016-02-10
Citation
Flow Turbulence and Combustion, 2016, 96 (4), pp.965-985
ISSN
1573-1987
Publisher
Springer Verlag
Start Page
965
End Page
985
Journal / Book Title
Flow Turbulence and Combustion
Volume
96
Issue
4
Copyright Statement
© The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Source
9th Mediterranean Combustion Symposium
Subjects
Science & Technology
Physical Sciences
Technology
Thermodynamics
Mechanics
Stratified Flames
Large eddy simulation
Sub-grid scale pdf equation
Stochastic Fields
LARGE-EDDY SIMULATION
TURBULENT REACTING FLOWS
DENSITY-FUNCTION
FIELD METHOD
FLAMES
DIFFUSION
JET
NO
Fluids & Plasmas
09 Engineering
Publication Status
Published
Start Date
2015-06-07
Finish Date
2015-06-11
Coverage Spatial
Rhodes, Greece