Title:
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Large-eddy simulation of ow and combustion dynamics in a lean partially premixed swirling combustor
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Author:
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Li, Shaoshuai; Zheng, Yunzhe; Zhu, Min; Mira, Daniel; Jiang, Xi
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Other authors:
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Barcelona Supercomputing Center |
Abstract:
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A lean partially premixed swirling combustor was studied by resolving the complete flow path from the swirl vanes to the chamber outlet with large-eddy simulation (LES). The flow and combustion dynamics for non-reacting and reacting situations was analysed, where the intrinsic effects of swirl vanes and counter flows on the vortex formation, vorticity distribution for non-reacting cases were examined. A modified flame index was introduced to identify the flame regime during the partially premixed combustion. The combustion instability phenomenon was examined by applying Fourier spectra analysis. Several scalar variables were monitored to investigate the combustion dynamics at different operating conditions. The effects of swirl number, equivalence ratio and nitrogen dilution on combustion dynamics and NOx emissions were found to be significant. |
Abstract:
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This work is supported by the UK EPSRC through Grant EP/K036750/1 and the National Natural Science Foundation of China through
Grant No. 51376107. The computation is supported by the Tsinghua National Laboratory for Information Science and Technology |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria electrònica -Combustion -LES -Lean partially premixed -Swirling flows -Combustion dynamics -NOx -Combustió--Models matemàtics |
Rights:
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Attribution-NonCommercial-NoDerivs 4.0 International License
https://creativecommons.org/licenses/by-nc-nd/4.0/
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Document type:
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Article - Submitted version Article |
Published by:
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Elsevier
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