摘要
对冷态煤粉气流在富氧微油点火燃烧器内的点火过程进行数值模拟,气相湍流流动、气相场的燃烧和辐射模型分别采用k-ε双方程模型、概率密度函数(Probability Density Function)与局部瞬时反应平衡模型、P1辐射模型。根据数值计算得到的结果找出不同煤粉浓度对着火温度与着火距离的影响,反映出煤粉在富氧微油点火燃烧器内的着火方式的变化。
Numerical simulation was employed to simulate the ignition process of pulverized coal （PC） with less oil in the abundant oxygen ignition combustor. Gas phase conservation equations, combustion in gas phase in the turbulent flow and radiative heat transfer were solved by κ-ε turbulence model, PDF and locally instantaneous equilibrium modal and P1 method respectively. The effects of the pulverized coal concentration on ignition distance and ignition temperature can be obtained from the numerical simulation results; the different ignition modes with the changes of the pulverized coal concentration are illustrated.
出处
《电站系统工程》
北大核心
2008年第1期19-20,23,共3页
Power System Engineering
基金
中国矿业大学煤炭加工与高效利用教育部重点实验室资助(CPEUKF06-02)
关键词
数值模拟
富氧微油点火
煤粉浓度
着火温度
着火距离
numerical simulation
less oil in abundant oxygen
PC concentration
ignition temperature
ignition distance
