Large eddy simulation of turbulent premixed and stratified combustion using flame surface density model coupled with tabulation method
查看参考文献26篇
文摘
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Large eddy simulations (LESs) are performed to investigate the Cambridge premixed and stratified flames, SwB1 and SwB5, respectively. The flame surface density (FSD) model incorporated with two different wrinkling factor models, i.e., the Muppala and Charlette2 wrinkling factor models, is used to describe combustion/turbulence interaction, and the flamelet generated manifolds (FGM) method is employed to determine major scalars. This coupled sub-grid scale (SGS) combustion model is named as the FSD-FGM model. The FGM method can provide the detailed species in the flame which cannot be obtained from the origin FSD model. The LES results show that the FSD-FGM model has the ability of describing flame propagation, especially for stratified flames. The Charlette2 wrinkling factor model performs better than the Muppala wrinkling factor model in predicting the flame surface area change by the turbulence. The combustion characteristics are analyzed in detail by the flame index and probability distributions of the equivalence ratio and the orientation angle, which confirms that for the investigated stratified flame, the dominant combustion modes in the upstream and downstream regions are the premixed mode and the back-supported mode, respectively. |
来源
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Applied Mathematics and Mechanics
,2018,39(12):1719-1736 【核心库】
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DOI
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10.1007/s10483-018-2396-9
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关键词
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large eddy simulation (LES)
;
flame surface density (FSD) model
;
tabulation
;
premixed combustion
;
stratified combustion
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地址
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1.
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, 230027
2.
Shenyang Engine Research Institute, Aero Engine (Group) Corporation of China, Shenyang, 110015
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语种
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英文 |
文献类型
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研究性论文 |
ISSN
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0253-4827 |
学科
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能源与动力工程 |
基金
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国家自然科学基金
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文献收藏号
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CSCD:6376239
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