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LES of propane-air swirling non-premixed flame using a SOM combustion model
1
Engineering Mechanics, Tsinghua University, China
Submission date: 2024-09-01
Final revision date: 2024-11-04
Acceptance date: 2024-12-09
Online publication date: 2024-12-31
Corresponding author
KEYWORDS
TOPICS
ABSTRACT
It is well know that non-premixed combustion is widely encountered in engine combustors. Presently Large-eddy simulation (LES) was used to study non-premixed combustion by many investigators using different combustion models. In this paper, the present authors used a second-order moment (SOM) combustion model for LES of propane-air swirling non-premixed combustion for the first time. The predicted time-averaged and RMS fluctuation velocities, time-averaged temperature and species concentration are in good agreement with experimental results, showing once again the feasibility of the SOM model. The instantaneous simulation results indicate the complex large-scale vortex structure and flame structure, different from those of the jet flame.
FUNDING
This study was sponsored by the Project of National Natural Science Foundation of China under the Grant 51390493.
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