The light-round is defined as the process by which the flame initiated by an ignition spark propagates from burner to burner in an annular combustor, eventually leading to a stable combustion. Combining experiments and numerical simulation, it was recently demonstrated that under perfectly premixed conditions, this process could be suitably described by large eddy simulation (LES) using massively parallel computations. The present investigation aims at developing light-round simulations in a configuration that is closer to that found in aero-engines by considering liquid n-heptane injection. The LES of the ignition sequence of a laboratory scale annular combustion chamber comprising sixteen swirled spray injectors is carried out with a monodisperse Eulerian approach for the description of the liquid phase. The objective is to assess this modeling approach of the two-phase reactive flow during the ignition process. The simulation results are compared in terms of flame structure and light-round duration to the corresponding experimental images of the flame front recorded by a high-speed intensified charge-coupled device camera and to the corresponding experimental delays. The dynamics of the flow is also analyzed to identify and characterize mechanisms controlling flame propagation during the light-round process.
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February 2018
Research-Article
Large Eddy Simulation of Light-Round in an Annular Combustor With Liquid Spray Injection and Comparison With Experiments
Théa Lancien,
Théa Lancien
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
e-mail: thea.lancien@centraliens.net
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
e-mail: thea.lancien@centraliens.net
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Kevin Prieur,
Kevin Prieur
Safran Tech, E&P,
Chateaufort,
Magny-Les-Hameaux 78772, France;
Chateaufort,
Magny-Les-Hameaux 78772, France;
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
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Daniel Durox,
Daniel Durox
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
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Sébastien Candel,
Sébastien Candel
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
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Ronan Vicquelin
Ronan Vicquelin
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
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Théa Lancien
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
e-mail: thea.lancien@centraliens.net
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
e-mail: thea.lancien@centraliens.net
Kevin Prieur
Safran Tech, E&P,
Chateaufort,
Magny-Les-Hameaux 78772, France;
Chateaufort,
Magny-Les-Hameaux 78772, France;
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
Daniel Durox
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
Sébastien Candel
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
Ronan Vicquelin
Laboratoire EM2C,
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
CNRS, CentraleSupélec,
Université Paris-Saclay,
Gif-sur-Yvette 91190, France
1Corresponding author.
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 10, 2017; final manuscript received July 20, 2017; published online October 10, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Feb 2018, 140(2): 021504 (10 pages)
Published Online: October 10, 2017
Article history
Received:
July 10, 2017
Revised:
July 20, 2017
Citation
Lancien, T., Prieur, K., Durox, D., Candel, S., and Vicquelin, R. (October 10, 2017). "Large Eddy Simulation of Light-Round in an Annular Combustor With Liquid Spray Injection and Comparison With Experiments." ASME. J. Eng. Gas Turbines Power. February 2018; 140(2): 021504. https://doi.org/10.1115/1.4037827
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