Large eddy simulations of swirling non-premixed flames with flamelet models: a comparison of numerical methods
Large eddy simulations of swirling non-premixed flames with flamelet models: a comparison of numerical methods
This work investigates the application of large eddy simulation (LES) to selected cases of the turbulent non premixed Sydney swirl flames. Two research groups (Loughborough University, LU and Imperial College, IC) have simulated these cases for different parameter sets, using two different and independent LES methods. The simulations of the non-reactive turbulent flow predicted the experimental results with good agreement and both simulations captured the recirculation structures and the vortex breakdown without major difficulties. For the reactive cases, the LES predictions were less satisfactory, and using two independent simulations has helped to understand the shortcomings of each. Furthermore one of the flames (SMH2) was found to be exceptionally hard to predict, which was supported by the lower amount of turbulent kinetic energy that was resolved in this case. However, the LES has identified modes of flame instability that were similar to those observed in some of the experiments.
523-561
Kempf, A.
c14f3207-8950-4613-af22-08dbfae69150
Malalasekera, W.
d3bc4153-1af3-41ab-9e42-4aa0d7cbaec7
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Stein, O.
9f2794af-a5b3-4442-9c53-01b28369a35c
1 December 2008
Kempf, A.
c14f3207-8950-4613-af22-08dbfae69150
Malalasekera, W.
d3bc4153-1af3-41ab-9e42-4aa0d7cbaec7
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Stein, O.
9f2794af-a5b3-4442-9c53-01b28369a35c
Kempf, A., Malalasekera, W., Ranga Dinesh, K.K.J. and Stein, O.
(2008)
Large eddy simulations of swirling non-premixed flames with flamelet models: a comparison of numerical methods.
Flow Turbulence and Combustion, 81 (4), .
(doi:10.1007/s10494-008-9147-1).
Abstract
This work investigates the application of large eddy simulation (LES) to selected cases of the turbulent non premixed Sydney swirl flames. Two research groups (Loughborough University, LU and Imperial College, IC) have simulated these cases for different parameter sets, using two different and independent LES methods. The simulations of the non-reactive turbulent flow predicted the experimental results with good agreement and both simulations captured the recirculation structures and the vortex breakdown without major difficulties. For the reactive cases, the LES predictions were less satisfactory, and using two independent simulations has helped to understand the shortcomings of each. Furthermore one of the flames (SMH2) was found to be exceptionally hard to predict, which was supported by the lower amount of turbulent kinetic energy that was resolved in this case. However, the LES has identified modes of flame instability that were similar to those observed in some of the experiments.
Text
FTC_2008_Published_Copy.pdf
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Published date: 1 December 2008
Organisations:
Engineering Science Unit
Identifiers
Local EPrints ID: 347343
URI: http://eprints.soton.ac.uk/id/eprint/347343
ISSN: 1386-6184
PURE UUID: 048d49ba-f07e-4ac4-bad3-dcae8aa40275
Catalogue record
Date deposited: 24 Jan 2013 15:53
Last modified: 15 Mar 2024 03:46
Export record
Altmetrics
Contributors
Author:
A. Kempf
Author:
W. Malalasekera
Author:
O. Stein
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
