基于详细化学反应动力学的含颗粒甲烷/空气层流火焰模拟研究

本文基于含颗粒甲烷燃烧详细化学反应动力学机理Gri-Mech3.0,采用层流预混火焰速度计算模型计算了含颗粒甲烷空气层流预混燃烧过程。通过对比层流火焰燃烧速度曲线,分析了温度和当量比对燃烧速度的影响,且对计算结果进行敏感性分析。研究结果表明,颗粒存在降低了火焰的燃烧速度,且温度越高,燃烧速度降低的越明显,而燃烧速度变化量随当量比的增加则先增大后减小。

Simulation Study of Methane/Air Containing Particles Laminar Flame Based on Detailed Chemical Kinetic

Based on the detailed chemical kinetic mechanism of methane containing particles combus- tion--Gri - Mech3. O,laminar premixed flame speed calculation model was adopted to calculate the methane/air containing particles laminar premixed combustion process. The influence of temperature and equivalence ratio on the combustion rate was analyzed by comparing the laminar flame speed curve, and sensitivity analysis was done on the calculation results. The results show that the existanee of particles reduces the flame burning rate, and the higher the temperature is, the more obvious the burring rate is. But the burning rate variation with the increase of equivalence ratio increases first and then decreases.