拉伸层流预混火焰化学热力学建表方法研究

推进技术 ›› 2017, Vol. 38 ›› Issue (5): 1093-1099.

拉伸层流预混火焰化学热力学建表方法研究

唐鹏^1,2,张宏达¹,叶桃红¹,于洲¹

中国科学技术大学热科学与能源工程系，安徽合肥 230027; 池州学院机电工程学院，安徽池州 247000,中国科学技术大学热科学与能源工程系，安徽合肥 230027,中国科学技术大学热科学与能源工程系，安徽合肥 230027,中国科学技术大学热科学与能源工程系，安徽合肥 230027

发布日期:2021-08-15
作者简介:唐鹏，男，博士生，研究领域为湍流预混燃烧的数值模拟。 E-mail: tangpeng@mail.ustc.edu.cn 通讯作者:叶桃红，男，博士，副教授，研究领域为湍流燃烧理论和数值。
基金资助:
国家自然科学基金(91441117；51576182)；池州学院校级自然重点研究项目(2016ZRZ007)。

Research on Thermo-Chemical Tabulation of Strained Laminar Premixed Flame

Department of Thermal Science and Energy Engineering，University of Science and Technology of China，Hefei 230027，China; School of Mechatronics Engineering，Chizhou University，Chizhou 247000，China,Department of Thermal Science and Energy Engineering，University of Science and Technology of China，Hefei 230027，China,Department of Thermal Science and Energy Engineering，University of Science and Technology of China，Hefei 230027，China and Department of Thermal Science and Energy Engineering，University of Science and Technology of China，Hefei 230027，China

Published:2021-08-15

摘要/Abstract

摘要： 通过求解物理空间上简化的层流甲烷/空气对撞预混火焰面方程，获得不同当量比下考虑拉伸效应的火焰面高维数据。为更准确地描述流动与燃烧的相互作用，采用基于矩阵分析的主成分分析法(PCA)对火焰面高维数据进行分析，并选用分析出的前两个主成分作为新的建表特征标量，进而构建考虑拉伸效应的层流预混火焰化学热力学表。相比于已有的拉伸层流预混火焰面建表方法，使用PCA方法得到的两个建表特征标量之间不相关，无需条件概率密度信息。同时PCA方法具有一定的通用性，可以推广到不同燃料不同当量比下的拉伸层流预混火焰面建表中。

关键词: 预混火焰；拉伸率；层流火焰；热力学

Abstract: The high dimensional flamelet data including the influence of strain rate is obtained by solving a physically simplified laminar premixed methane/air counterflow equation under different equivalent ratios. For evaluating the interaction of flow and combustion properly，the principal component analysis(PCA)is used to study the high dimensional flamelet data. The first two principal components are used as the tabulated scalars to build the thermo-chemical table considering the effects of strain rate in strained laminar premixed flame. Comparing with the traditional chemistry tabulation method for strained laminar premixed flame，the two scalars obtained by PCA are not relevant，therefore，the conditional probabilities are not required any more. Additionally，PCA method has well commonality and could be extended for building the thermo-chemical table under the condition of different fuel and equivalent ratios.

Key words: Premixed flame；Strain rate；Laminar flame；Thermodynamics

唐鹏,张宏达,叶桃红,于洲. 拉伸层流预混火焰化学热力学建表方法研究[J]. 推进技术, 2017, 38(5): 1093-1099.

TANG Peng^1,2,ZHANG Hong-da¹,YE Tao-hong¹,YU Zhou¹. Research on Thermo-Chemical Tabulation of Strained Laminar Premixed Flame[J]. Journal of Propulsion Technology, 2017, 38(5): 1093-1099.

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