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本文根据碳粒非均相着火,有无颗粒温度跃变现象,来判断CO的均相着火,阐述了MFF模型中颗粒边界层CO着火燃烧假设的理论意义。通过实验与理论对比,证明了小于100μm的碳粒有可能发生CO着火。MFF模型预报与连续膜模型,以及实验点都有好的符合。利用MFF模型推导出三种极限情况的燃烧模式,揭示了MFF模型与连续膜模型的理论关联。从理论与实验对比中,进一步地验证了MFF模型。
In this paper, the homogeneity ignition of CO is judged according to the heterogeneous ignition of carbon particles with or without temperature jump of particles. The theoretical significance of the CO combustion assumption on particle boundary layer in MFF model is expounded. By experiment and theory comparison, it is proved that the carbon particles smaller than 100μm may have CO ignition. MFF model prediction and continuous film model, as well as the experimental point has a good match. Three kinds of combustion modes are deduced by MFF model, and the theoretical relationship between MFF model and continuous film model is revealed. From the theoretical and experimental comparison, the MFF model is further verified.