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3-D simulation of soot formation in a direct-injection diesel engine based on a comprehensive chemical mechanism and method of moments
Zhong, Bei-Jing; Dang, Shuai; Song, Ya-Na; Gong, Jing-Song; Zhong, BJ (reprint author), Tsinghua Univ, Dept Engn Mech, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China.
Department空间技术部
Source PublicationCOMBUSTION THEORY AND MODELLING
2012
Volume16Issue:1Pages:143-171
ISSN1364-7830
Language英语
KeywordSoot Polycyclic Aromatic Hydrocarbons N-heptane Oxidation Di-diesel Engine Turbulent Diffusion Flame
AbstractHere, we propose both a comprehensive chemical mechanism and a reduced mechanism for a three-dimensional combustion simulation, describing the formation of polycyclic aromatic hydrocarbons (PAHs), in a direct-injection diesel engine. A soot model based on the reduced mechanism and a method of moments is also presented. The turbulent diffusion flame and PAH formation in the diesel engine were modelled using the reduced mechanism based on the detailed mechanism using a fixed wall temperature as a boundary condition. The spatial distribution of PAH concentrations and the characteristic parameters for soot formation in the engine cylinder were obtained by coupling a detailed chemical kinetic model with the three-dimensional computational fluid dynamic (CFD) model. Comparison of the simulated results with limited experimental data shows that the chemical mechanisms and soot model are realistic and correctly describe the basic physics of diesel combustion but require further development to improve their accuracy.; Here, we propose both a comprehensive chemical mechanism and a reduced mechanism for a three-dimensional combustion simulation, describing the formation of polycyclic aromatic hydrocarbons (PAHs), in a direct-injection diesel engine. A soot model based on the reduced mechanism and a method of moments is also presented. The turbulent diffusion flame and PAH formation in the diesel engine were modelled using the reduced mechanism based on the detailed mechanism using a fixed wall temperature as a boundary condition. The spatial distribution of PAH concentrations and the characteristic parameters for soot formation in the engine cylinder were obtained by coupling a detailed chemical kinetic model with the three-dimensional computational fluid dynamic (CFD) model. Comparison of the simulated results with limited experimental data shows that the chemical mechanisms and soot model are realistic and correctly describe the basic physics of diesel combustion but require further development to improve their accuracy.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3329
Collection其他部室
Corresponding AuthorZhong, BJ (reprint author), Tsinghua Univ, Dept Engn Mech, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing 100084, Peoples R China.
Recommended Citation
GB/T 7714
Zhong, Bei-Jing,Dang, Shuai,Song, Ya-Na,et al. 3-D simulation of soot formation in a direct-injection diesel engine based on a comprehensive chemical mechanism and method of moments[J]. COMBUSTION THEORY AND MODELLING,2012,16(1):143-171.
APA Zhong, Bei-Jing,Dang, Shuai,Song, Ya-Na,Gong, Jing-Song,&Zhong, BJ .(2012).3-D simulation of soot formation in a direct-injection diesel engine based on a comprehensive chemical mechanism and method of moments.COMBUSTION THEORY AND MODELLING,16(1),143-171.
MLA Zhong, Bei-Jing,et al."3-D simulation of soot formation in a direct-injection diesel engine based on a comprehensive chemical mechanism and method of moments".COMBUSTION THEORY AND MODELLING 16.1(2012):143-171.
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