李耀鹏

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:能源与动力学院

学科:工程热物理

办公地点:能源与动力学院809室

电子邮箱:liyaopeng@dlut.edu.cn

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解耦法:一个构建简化或骨架机理的有效方法

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发表时间:2016-01-01

发表刊物:物理化学学报

所属单位:能源与动力学院

卷号:32

期号:9

页面范围:2209-2215

ISSN号:1000-6818

摘要:Reduced and skeletal mechanisms with high fidelity are urgently required for multi-dimensional computational fluid dynamics (CFD) combustion simulations. In this study, a series of reduced mechanisms were obtained by reducing a detailed mechanism of primary reference fuel (PRF) using the directed relation graph aided error propagation and sensitivity analysis (DRGEPSA) method for different reduction targets. By analyzing the structures of the reduced mechanisms, it is found that the mechanism structure significantly changes with the variation of the reduction target. Then, the performance of the reduced mechanism is evaluated based on the uncertainty quantification. It indicates that a small relative error should be used in the mechanism reduction method to avoid distorted predictions from the reduced mechanisms. Finally, the decoupling methodology is proposed to construct the skeletal mechanism of PRF. The results show that both the ignition delay time and the laminar flame speed can be satisfactorily reproduced by the skeletal mechanism with a detailed H-2/CO/C-1 and a skeletal C-4-C-n sub-mechanism.

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