化学动力学机理耦合EDC燃烧模型对湍流扩散火焰的数值模拟

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.

Turbulent Diffusion Combustion Numerical Simulation Linking EDC Combustion Model with Chemical Kinetics Reaction Mechanism

It is important for us to link combustion model with chemical kinetics reaction mechanism in turbulence combustion numerical simulation.The eddy dissipation concept(EDC) and CH4/air chemical reaction kinetics mechanism Gri-Mech3.0 are applied to a 2-D turbulence diffusion combustion in a chamber based on analysing existing models.The predicted results are in agreement with analytic solution of literature.Hence,it can gain flame structure to link combustion model with chemical kinetics reaction mechanism in turbulence combustion numerical simulation.