A novel method for chemistry tabulation of strained premixed/stratified flames based on principal component analysis
查看参考文献27篇
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文摘
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The principal component analysis (PCA) is used to analyze the high dimensional chemistry data of laminar premixed/stratified flames under strain effects. The first few principal components (PCs) with larger contribution ratios are chosen as the tabulated scalars to build the look-up chemistry table. Prior tests show that strained premixed flame structure can be well reconstructed. To highlight the physical meanings of the tabulated scalars in stratified flames, a modified PCA method is developed, where the mixture fraction is used to replace one of the PCs with the highest correlation coefficient. The other two tabulated scalars are then modified with the Schmidt orthogonalization. The modified tabulated scalars not only have clear physical meanings, but also contain passive scalars. The PCA method has good commonality, and can be extended for building the thermochemistry table including strain rate effects when different fuels are used. |
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来源
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Applied Mathematics and Mechanics. English Edition
,2018,39(6):855-866 【核心库】
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DOI
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10.1007/s10483-018-2326-6
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关键词
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premixed flame
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stratified flame
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strain rate
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principal component analysis (PCA)
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chemistry table
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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.
School of Mechatronics Engineering, Chizhou University, Anhui, Chizhou, 247000
3.
Shenyang Engine Research Institute, Aero Engine (Group) Corporation of China, Shenyang, 110015
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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0253-4827 |
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学科
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能源与动力工程 |
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基金
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国家自然科学基金
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the Natural Key Program of Chizhou University
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文献收藏号
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CSCD:6237745
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参考文献 共
27
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