Comparison of four combustion models for simulating the premixed combustion in inert porous media
Comparison of four combustion models for simulating the premixed combustion in inert porous media
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模拟惰性多孔介质预混燃烧的四种燃烧模型的比较
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
J. Pereira
中科院分区：
文献类型：
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作者：
X. Y. Zhou;J. Pereira
本文采用四种燃烧模型对甲烷/空气燃料在惰性多孔介质中的燃烧进行了一维预测：全机理模型（FM，49个组分和227个元素反应）、骨架机理模型（SM，26个组分和77个元素反应）、四步简化机理模型（4 RM，9个组分）和一步全局机理模型（1GM）。这些模型对温度，物种，燃烧速度和污染物排放的影响进行了检查。计算结果与现有的实验数据进行了比较。结果表明，一步全局机制的已知局限性可以部分地被现有的四步简化机制所消除。在多孔介质中燃烧的模拟中，该4 RM模型与全机理模型相比非常令人满意。这一结论对于实际多孔介质燃烧器的模拟是令人鼓舞的，因为4 RM模型提高了计算过程的稳定性，并且可以以减少的计算资源和成本来使用。
This work reports one-dimensional predictions of methane/air fuel combustion in inert porous media using four combustion models: full mechanism (FM, 49 species and 227 elemental reactions), skeletal mechanism (SM, 26 species and 77 elemental reactions), 4-step reduced mechanism (4RM, 9 species) and 1-step global mechanism (1GM). The effects of these models on temperature, species, burning speeds and pollutant emissions are examined. The calculations are compared with available experimental data. It is concluded that the already known limitation of the 1-step global mechanism can be partially eliminated by the present 4-step reduced mechanism. This 4RM model compares very satisfactorily with the full mechanism in the simulation of combustion in porous media. This conclusion is encouraging for the simulation of practical porous media burners because the 4RM model improves the stability of the calculation process and can be used with reduced computational resources and cost.