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将化学动力学机理耦合燃烧模型进行湍流燃烧数值模拟有重要意义。在分析目前现有燃烧模型的基础上,采用CH4/空气化学反应动力学机理和EDC燃烧模型对燃烧器中的二维湍流扩散燃烧进行模拟,得到了燃烧温度、物种浓度随空间的变化曲线图,经分析发现,计算结果可以较好反应文献中的解析解。由此得出结论:将化学动力学机理耦合EDC燃烧模型可以较好地模拟湍流扩散燃烧的火焰结构,从而为工程实际复杂燃烧情况下的污染物、中间物种和痕迹量物种生成机理的研究提供基础。
It is significant to simulate turbulent combustion by coupling chemical combustion kinetics model with combustion model. Based on the analysis of the existing combustion models, the two-dimensional turbulent diffusion combustion in the combustor was simulated by CH4 / air chemical reaction kinetics and EDC combustion model, and the combustion temperature and species concentration curve with space were obtained The analysis shows that the calculated results can better reflect the analytical solutions in the literature. It is concluded that the coupling of chemical kinetic mechanism with EDC combustion model can better simulate the flame structure of turbulent diffusion combustion and provide a theoretical basis for the study of the formation mechanism of pollutants, intermediate species and trace species under the actual complex combustion conditions basis.