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Large eddy simulation of turbulent premixed and stratified combustion using flame surface density model coupled with tabulation method

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Yu Zhou 1   Zhang Hongda 2   Ye Taohong 1 *   Zhu Minming 1  
文摘 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 Applied Mathematics and Mechanics ,2018,39(12):1719-1736 【核心库】
DOI 10.1007/s10483-018-2396-9
关键词 large eddy simulation (LES) ; flame surface density (FSD) model ; tabulation ; premixed combustion ; stratified combustion
地址

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

语种 英文
文献类型 研究性论文
ISSN 0253-4827
学科 能源与动力工程
基金 国家自然科学基金
文献收藏号 CSCD:6376239

参考文献 共 26 共2页

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