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为系统分析复杂燃烧化学反应动力学机理,查明冗余组分及反应,提高计算效率,构建了详细化学机理分析及简化数值平台.综合运用路径通量分析、敏感性分析、反应速率分析方法,对一个可用于含磷物质对火焰抑制研究的化学机理进行了详细分析,得到了组分及反应的重要度信息,并对该机理进行了简化.构筑的简化机理包含46个组分、183步反应,与包含121个组分、682步反应的详细机理相比,简化机理对C3H8/DMMP/Air预混火焰的计算效率可提高9.47倍,且具有较高的计算精度.
In order to systematically analyze the kinetic mechanism of complex combustion chemical reaction, identify redundant components and reactions, increase the computational efficiency and construct a detailed chemical mechanism analysis and simplify the numerical platform.Through the comprehensive application of path flux analysis, sensitivity analysis and reaction rate analysis , A chemical mechanism that can be used to study the flame inhibition of phosphorus-containing substances is analyzed in detail, the importance of the components and the reaction are obtained, and the mechanism is simplified. The simplified mechanism of construction includes 46 components, 183 Compared with the detailed mechanism including 121 components and 682 steps, the simplified mechanism can improve the computational efficiency of C3H8 / DMMP / Air premixed flame by 9.47 times, and has higher calculation accuracy.