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	乙醇-空气燃烧的大涡模拟及其实验验证(英文)
	李科 ; 周力行 ; CHAN C.K ; LI Ke ; ZHOU Lixing ; CHAN C.K
	2016-03-30 ; 2016-03-30
关键词	ethanol-air two-phase flow spray combustion large-eddy simulation TK16
其他题名	Large-eddy Simulation of Ethanol Spray-Air Combustion and Its Experimental Validation
中文摘要	Large-eddy simulation of spray combustion is under its rapid development.Different combustion models were used by different investigators.However,these models are less validated by detailed experimental data.In this paper,large-eddy simulation(LES)of ethanol spray-air combustion was made using an Eulerian-Lagrangian approach,a subgrid-scale kinetic energy stress model,and a filtered finite-rate combustion model,neglecting the sub-grid scale reaction rate.The simulation results are compared with experimental dada in the literature and validated in detail.The LES obtained statistically averaged gas temperature is in much better agreement with the experimental results than Reynolds averaged(RANS)modeling using the most complex probability density function(PDF)equation combustion model.The instantaneous LES results show the coherent structures of the shear region near the high-temperature flame zone and the fuel vapor concentration map,indicating that the droplets are concentrated in this shear region.The instantaneous temperature,oxygen and carbon dioxide concentration maps show the close interaction between the coherent structures and the combustion reaction.; Large-eddy simulation of spray combustion is under its rapid development. Different combustion models were used by different investigators. However, these models are less validated by detailed experimental data. In this paper, large-eddy simulation(LES) of ethanol spray-air combustion was made using an Eulerian-Lagrangian approach, a subgrid-scale kinetic energy stress model, and a filtered finite-rate combustion model, neglecting the sub-grid scale reaction rate. The simulation results are compared with experimental dada in the literature and validated in detail. The LES obtained statistically averaged gas temperature is in much better agreement with the experimental results than Reynolds averaged(RANS) modeling using the most complex probability density function(PDF) equation combustion model. The instantaneous LES results show the coherent structures of the shear region near the high-temperature flame zone and the fuel vapor concentration map, indicating that the droplets are concentrated in this shear region. The instantaneous temperature, oxygen and carbon dioxide concentration maps show the close interaction between the coherent structures and the combustion reaction.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143831]
专题	清华大学
推荐引用方式 GB/T 7714	李科,周力行,CHAN C.K,等. 乙醇-空气燃烧的大涡模拟及其实验验证(英文)[J],2016, 2016.
APA	李科,周力行,CHAN C.K,LI Ke,ZHOU Lixing,&CHAN C.K.(2016).乙醇-空气燃烧的大涡模拟及其实验验证(英文)..
MLA	李科,et al."乙醇-空气燃烧的大涡模拟及其实验验证(英文)".(2016).

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