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A Comparative Study of LES Turbulent Combustion Models Applied to a Low Swirl Lean Premixed Burner

Nogenmyr, Karl-Johan LU ; Bai, Xue-Song LU ; Fureby, Christer; Petersson, Per LU ; Collin, Robert LU ; Linne, Mark LU and Aldén, Marcus LU (2008) 46th AIAA Aerospace Sciences Meeting and Exhibit In AIAA 2008-513
Abstract
In this study we compare two types of Large Eddy Simulation (LES) turbulent combustion

models with experimental data for a low swirl stabilized turbulent lean premixed flame.

Such flames are a great challenge to numerical simulations since they are unsteady and sensitive

to boundary conditions, and details of the experimental set-up. The two classes of LES

turbulent combustion models considered are the flamelet and finite rate chemistry models.

Individual models of each category may be very different, but in the former the flame is

considered infinitely thin, whereas in the latter the chemical kinetics and the diffusion governs

the flame behavior. As representative of the... (More)
In this study we compare two types of Large Eddy Simulation (LES) turbulent combustion

models with experimental data for a low swirl stabilized turbulent lean premixed flame.

Such flames are a great challenge to numerical simulations since they are unsteady and sensitive

to boundary conditions, and details of the experimental set-up. The two classes of LES

turbulent combustion models considered are the flamelet and finite rate chemistry models.

Individual models of each category may be very different, but in the former the flame is

considered infinitely thin, whereas in the latter the chemical kinetics and the diffusion governs

the flame behavior. As representative of the flamelet models we here use a G-equation

model, and as representative of the finite rate chemistry models we use the thickened flame

model and the partially stirred reactor model. Predictions are being compared with measurement

data for an atmospheric low-swirl methane/air flame. The experimental measurement

data include data from stereoscopic PIV, filtered Rayleigh scattering and acetone LIF,

providing information about the velocity, temperature and fuel distribution. All LES show

reasonable agreement with the experimental data, predicting a lifted weakly swirling, flame

oscillating back and forth just above the rim of the burner. A more detailed comparison of

the predictions with the experimental data show that best quantitative agreement is obtained

by one of the finite rate chemistry models, whereas the best qualitative comparison is

obtained by the flamelet model. Causes for the difference in qualitative and quantitative behavior

are elaborated on in the concluding remarks section. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
AIAA 2008-513
pages
14 pages
publisher
American Institute of Aeronautics and Astronautics
conference name
46th AIAA Aerospace Sciences Meeting and Exhibit
external identifiers
  • Other:AIAA 2008-513
  • Scopus:78149442758
DOI
10.2514/6.2008-513
language
English
LU publication?
yes
id
c78609f9-c565-4b9e-932b-9679658c9fa6 (old id 3294601)
date added to LUP
2013-01-10 14:11:35
date last changed
2016-10-13 04:42:54
@misc{c78609f9-c565-4b9e-932b-9679658c9fa6,
  abstract     = {In this study we compare two types of Large Eddy Simulation (LES) turbulent combustion<br/><br>
models with experimental data for a low swirl stabilized turbulent lean premixed flame.<br/><br>
Such flames are a great challenge to numerical simulations since they are unsteady and sensitive<br/><br>
to boundary conditions, and details of the experimental set-up. The two classes of LES<br/><br>
turbulent combustion models considered are the flamelet and finite rate chemistry models.<br/><br>
Individual models of each category may be very different, but in the former the flame is<br/><br>
considered infinitely thin, whereas in the latter the chemical kinetics and the diffusion governs<br/><br>
the flame behavior. As representative of the flamelet models we here use a G-equation<br/><br>
model, and as representative of the finite rate chemistry models we use the thickened flame<br/><br>
model and the partially stirred reactor model. Predictions are being compared with measurement<br/><br>
data for an atmospheric low-swirl methane/air flame. The experimental measurement<br/><br>
data include data from stereoscopic PIV, filtered Rayleigh scattering and acetone LIF,<br/><br>
providing information about the velocity, temperature and fuel distribution. All LES show<br/><br>
reasonable agreement with the experimental data, predicting a lifted weakly swirling, flame<br/><br>
oscillating back and forth just above the rim of the burner. A more detailed comparison of<br/><br>
the predictions with the experimental data show that best quantitative agreement is obtained<br/><br>
by one of the finite rate chemistry models, whereas the best qualitative comparison is<br/><br>
obtained by the flamelet model. Causes for the difference in qualitative and quantitative behavior<br/><br>
are elaborated on in the concluding remarks section.},
  author       = {Nogenmyr, Karl-Johan and Bai, Xue-Song and Fureby, Christer and Petersson, Per and Collin, Robert and Linne, Mark and Aldén, Marcus},
  language     = {eng},
  pages        = {14},
  publisher    = {ARRAY(0x94a8380)},
  series       = {AIAA 2008-513},
  title        = {A Comparative Study of LES Turbulent Combustion Models Applied to a Low Swirl Lean Premixed Burner},
  url          = {http://dx.doi.org/10.2514/6.2008-513},
  year         = {2008},
}