| Optimization of a Reduced Chemical Kinetic Model for HCCI Engine Simulations by Micro-Genetic Algorithm |
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| 作者姓名： | 黄豪中 苏万华 |
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| 作者单位： | State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300072, China |
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| 摘 要： | A reduced chemical kinetic model （44 species and 72 reactions） for the homogeneous charge compression ignition （HCCI） combustion of n-heptane was optimized to improve its autoignition predictions under different engine operating conditions. The seven kinetic parameters of the optimized model were determined by using the combination of a micro-genetic algorithm optimization methodology and the SENKIN program of CHEMKIN chemical kinetics software package. The optimization was performed within the range of equivalence ratios 0.2-1.2, initial temperature 310- 375 K and initial pressure 0, 1-0.3 MPa, The engine simulations show that the optimized model agrees better with the detailed chemical kinetic model （544 species and 2 446 reactions） than the original model does.
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| 关 键 词： | HCCI发动机 单一燃料压缩点火 简化化学动力学模型 n-庚烷 微遗传算法 最优化 |
| 收稿时间： | 2005-04-26 |
Optimization of a Reduced Chemical Kinetic Model for HCCI Engine Simulations by Micro-Genetic Algorithm |
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| HUANG Haozhong,SU Wanhua.Optimization of a Reduced Chemical Kinetic Model for HCCI Engine Simulations by Micro-Genetic Algorithm[J].Transactions of Tianjin University,2006,12(1):66-71. |
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| Authors: | HUANG Haozhong SU Wanhua |
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| Abstract: | A reduced chemical kinetic model (44 species and 72 reactions) for the homogeneous charge compression ignition (HCCI) combustion of n-heptane was optimized to improve its autoignition predictions under different engine operating conditions. The seven kinetic parameters of the optimized model were determined by using the combination of a micro-genetic algorithm optimization methodology and the SENKIN program of CHEMKIN chemical kinetics software package. The optimization was performed within the range of equivalence ratios 0.2-1.2, initial temperature 310-375 K and initial pressure 0.1-0.3 MPa. The engine simulations show that the optimized model agrees better with the detailed chemical kinetic model (544 species and 2 446 reactions) than the original model does. |
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| Keywords: | HCCI engine reduced chemical kinetic model n-heptane micro-genetic algorithm optimization |
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