A Mechanism Reduction Method Integrating Path Flux Analysis with Multi Generations and Sensitivity Analysis

作者：Wang, Wei; Gou, Xiaolong^*

来源：Combustion Science and Technology, 2017, 189(1): 24-42.

DOI：10.1080/00102202.2016.1195818

• Methane
• n-Heptane
• Path flux analysis with multi generations (MPFA)
• Sensitivity analysis
• Skeletal chemistry

A novel mechanism reduction method that integrates path flux analysis with multi generations and sensitivity analysis (MPFASA) is proposed to reduce the complex detailed chemistry and to generate skeletal mechanisms. At first, the path flux analysis with multi generations (MPFA) method is used to efficiently reduce detailed mechanisms; then the sensitivity analysis (SA) method is applied to further eliminate the redundant species and their related reactions on the basis of the skeletal chemistry obtained by the MPFA method. Detailed mechanisms of methane and n-heptane are reduced by the MPFASA method, which are validated in the context of autoignition and perfectly stirred reactor for methane/air and n-heptane/air mixtures, over a wide range of operating conditions. The comparison shows that the skeletal mechanisms generated by the MPFASA method can well reproduce the results of detailed mechanisms and contain a much smaller number of species and reactions than those obtained by using the MFPA method only. It is illustrated that the MPFASA approach can overcome the shortcomings of the MPFA and SA methods and can be applied to obtain further reduced skeletal mechanisms in reactive flow modeling.

• 出版日期2017
• 单位重庆大学