LES of sandia flame D with eulerian PDF and finite-rate chemistry

Fabrizio Bisetti; J. Y. Chen

LES of sandia flame D with eulerian PDF and finite-rate chemistry

Fabrizio Bisetti^*, J. Y. Chen

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

Monte Carlo simulations of joint PDF approaches have been extensively developed in the past largely with Reynolds Averaged Navier Stokes (RANS) equations. Current interests are in the extension of PDF approaches to Large Eddy Simulation (LES). As LES allows to resolve the large scales of turbulence in time and space, a joint LESPDF approach holds the promise to ease the modelling requirements (e.g. mixing models). In the past we have implemented a joint scalar PDF approach into LES with the amelet model using an Eulerian approach. Our preliminary results demonstrated that careful implementation of the Eulerian approach can be fully consistent with the counterpart finite-volume method. In this paper, results of recent LES of a pilot CH₄/Air ame (Sandia/TUD ame D) with realistic finite-rate chemistry will be reported using three di erent mixing models including modified Curl (MC), Interaction by Exchange with the Mean (IEM), and Eucledian Minimum Spanning Tree (EMST). The calculations were performed with a 12-step reduced chemistry that has been well tested in RANS simulations of Sandia Flame D. In constrast to established RANS results which showed unphysical extinction with selected mixing models, LES results with di erent mixing models all lead to stable combustion and somewhat similar extinction patterns. These results suggest that the requirements of mixing models may be relaxed if large variations in scalar composition are coherently resolved as shown by our implementation of a joint LES-Eulerian PDF approach.

Original language	English (US)
Title of host publication	Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting
Publisher	Western States Section/Combustion Institute
Pages	554-561
Number of pages	8
ISBN (Electronic)	9781617827921
State	Published - 2005
Externally published	Yes
Event	Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 - Stanford, United States Duration: Oct 17 2005 → Oct 18 2005

Publication series

Name	Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting
Volume	1

Other

Other	Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005
Country/Territory	United States
City	Stanford
Period	10/17/05 → 10/18/05

Bibliographical note

Publisher Copyright:
© (2005) by the Western States Section/Combustion Institute. All rights reserved.

Keywords

Eulerian PDF methods
Large Eddy Simulation
Mixing models
Turbulent combustion

ASJC Scopus subject areas

General Chemical Engineering
Physical and Theoretical Chemistry
Mechanical Engineering

Cite this

Bisetti, F., & Chen, J. Y. (2005). LES of sandia flame D with eulerian PDF and finite-rate chemistry. In Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting (pp. 554-561). (Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting; Vol. 1). Western States Section/Combustion Institute.

Bisetti, Fabrizio ; Chen, J. Y. / LES of sandia flame D with eulerian PDF and finite-rate chemistry. Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting. Western States Section/Combustion Institute, 2005. pp. 554-561 (Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting).

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title = "LES of sandia flame D with eulerian PDF and finite-rate chemistry",

abstract = "Monte Carlo simulations of joint PDF approaches have been extensively developed in the past largely with Reynolds Averaged Navier Stokes (RANS) equations. Current interests are in the extension of PDF approaches to Large Eddy Simulation (LES). As LES allows to resolve the large scales of turbulence in time and space, a joint LESPDF approach holds the promise to ease the modelling requirements (e.g. mixing models). In the past we have implemented a joint scalar PDF approach into LES with the amelet model using an Eulerian approach. Our preliminary results demonstrated that careful implementation of the Eulerian approach can be fully consistent with the counterpart finite-volume method. In this paper, results of recent LES of a pilot CH4/Air ame (Sandia/TUD ame D) with realistic finite-rate chemistry will be reported using three di erent mixing models including modified Curl (MC), Interaction by Exchange with the Mean (IEM), and Eucledian Minimum Spanning Tree (EMST). The calculations were performed with a 12-step reduced chemistry that has been well tested in RANS simulations of Sandia Flame D. In constrast to established RANS results which showed unphysical extinction with selected mixing models, LES results with di erent mixing models all lead to stable combustion and somewhat similar extinction patterns. These results suggest that the requirements of mixing models may be relaxed if large variations in scalar composition are coherently resolved as shown by our implementation of a joint LES-Eulerian PDF approach.",

keywords = "Eulerian PDF methods, Large Eddy Simulation, Mixing models, Turbulent combustion",

author = "Fabrizio Bisetti and Chen, {J. Y.}",

note = "Publisher Copyright: {\textcopyright} (2005) by the Western States Section/Combustion Institute. All rights reserved.; Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 ; Conference date: 17-10-2005 Through 18-10-2005",

year = "2005",

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Bisetti, F & Chen, JY 2005, LES of sandia flame D with eulerian PDF and finite-rate chemistry. in Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting. Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting, vol. 1, Western States Section/Combustion Institute, pp. 554-561, Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005, Stanford, United States, 10/17/05.

LES of sandia flame D with eulerian PDF and finite-rate chemistry. / Bisetti, Fabrizio; Chen, J. Y.
Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting. Western States Section/Combustion Institute, 2005. p. 554-561 (Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - LES of sandia flame D with eulerian PDF and finite-rate chemistry

AU - Bisetti, Fabrizio

AU - Chen, J. Y.

PY - 2005

Y1 - 2005

N2 - Monte Carlo simulations of joint PDF approaches have been extensively developed in the past largely with Reynolds Averaged Navier Stokes (RANS) equations. Current interests are in the extension of PDF approaches to Large Eddy Simulation (LES). As LES allows to resolve the large scales of turbulence in time and space, a joint LESPDF approach holds the promise to ease the modelling requirements (e.g. mixing models). In the past we have implemented a joint scalar PDF approach into LES with the amelet model using an Eulerian approach. Our preliminary results demonstrated that careful implementation of the Eulerian approach can be fully consistent with the counterpart finite-volume method. In this paper, results of recent LES of a pilot CH4/Air ame (Sandia/TUD ame D) with realistic finite-rate chemistry will be reported using three di erent mixing models including modified Curl (MC), Interaction by Exchange with the Mean (IEM), and Eucledian Minimum Spanning Tree (EMST). The calculations were performed with a 12-step reduced chemistry that has been well tested in RANS simulations of Sandia Flame D. In constrast to established RANS results which showed unphysical extinction with selected mixing models, LES results with di erent mixing models all lead to stable combustion and somewhat similar extinction patterns. These results suggest that the requirements of mixing models may be relaxed if large variations in scalar composition are coherently resolved as shown by our implementation of a joint LES-Eulerian PDF approach.

AB - Monte Carlo simulations of joint PDF approaches have been extensively developed in the past largely with Reynolds Averaged Navier Stokes (RANS) equations. Current interests are in the extension of PDF approaches to Large Eddy Simulation (LES). As LES allows to resolve the large scales of turbulence in time and space, a joint LESPDF approach holds the promise to ease the modelling requirements (e.g. mixing models). In the past we have implemented a joint scalar PDF approach into LES with the amelet model using an Eulerian approach. Our preliminary results demonstrated that careful implementation of the Eulerian approach can be fully consistent with the counterpart finite-volume method. In this paper, results of recent LES of a pilot CH4/Air ame (Sandia/TUD ame D) with realistic finite-rate chemistry will be reported using three di erent mixing models including modified Curl (MC), Interaction by Exchange with the Mean (IEM), and Eucledian Minimum Spanning Tree (EMST). The calculations were performed with a 12-step reduced chemistry that has been well tested in RANS simulations of Sandia Flame D. In constrast to established RANS results which showed unphysical extinction with selected mixing models, LES results with di erent mixing models all lead to stable combustion and somewhat similar extinction patterns. These results suggest that the requirements of mixing models may be relaxed if large variations in scalar composition are coherently resolved as shown by our implementation of a joint LES-Eulerian PDF approach.

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KW - Large Eddy Simulation

KW - Mixing models

KW - Turbulent combustion

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M3 - Conference contribution

AN - SCOPUS:84946843899

T3 - Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting

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BT - Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting

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Bisetti F, Chen JY. LES of sandia flame D with eulerian PDF and finite-rate chemistry. In Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting. Western States Section/Combustion Institute. 2005. p. 554-561. (Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 Fall Meeting).

LES of sandia flame D with eulerian PDF and finite-rate chemistry

Abstract

Publication series

Other

Bibliographical note

Keywords

ASJC Scopus subject areas

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Cite this