Combustion Characteristics of N-Butanol/N-Heptane Blend Using Reduced Chemical Kinetic Mechanism

被引:1
|
作者
Zhang, Defu [1 ]
Wang, Fang [1 ]
Pei, Yiqiang [2 ]
Yang, Jiankun [3 ]
An, Dayang [1 ]
Hao, Hongbin [1 ]
机构
[1] Tianjin Univ Technol, Maritime Coll, Tianjin 300384, Peoples R China
[2] Tianjin Univ, Sch Mech Engn, Tianjin 300072, Peoples R China
[3] Cnooc Energy Dev Equipment Technol Co Ltd, Mech & Elect Tech Serv Ctr, Tianjin 300452, Peoples R China
关键词
mechanism reduction; n-butanol; n-heptane; validation; HCCI combustion; DIESEL-ENGINE; EXHAUST EMISSIONS; IGNITION; MODEL; PERFORMANCE; REDUCTION; OXIDATION; NOX; VALIDATION; INJECTION;
D O I
10.3390/en16124768
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The detailed mechanisms of n-heptane and n-butanol were reduced for the target condition of ignition delay time using the direct relationship diagram method based on error transfer, the direct relationship diagram method based on coupling error transfer and sensitivity analysis, and the total material sensitivity analysis method. The reduced n-heptane (132 species and 585 reactions) and n-butanol (82 species and 383 reactions) were used to verify the ignition delay time and concentrations of the major species, respectively. The results showed that the reduced mechanism has a good prediction ability for the ignition delay time. The predicted mole fraction results of the major species were in good agreement. These reduced mechanisms were combined to finally construct a reduced mechanism for the n-heptane/butanol fuel mixture, which included 166 species and 746 reactions. Finally, the reduced mechanism was used to simulate the HCCI combustion mode, and the results showed that the reduced mechanism can better predict the ignition and combustion timings of HCCI under different conditions and maintain the ignition and combustion characteristics of the detailed mechanism; this indicates that the mechanism model constructed in this study is reliable.
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页数:19
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