摘要
对马蹄形火焰玻璃窑炉燃烧空间内的流动、燃烧及辐射传热等过程进行了数值模拟研究 ,得到了炉内燃烧空间的速度场、温度场、组分浓度分布及燃烧空间向玻璃液面传递的热流分布。探讨了燃烧空间入口的进气角度对炉内温度场和向玻璃面传递的热流的影响 ,模拟结果表明 ,当入口的进气角度在 5°～ 1 0°之间时 ,传热效果较好。
Heat transfer from the flame in a glass furnace is important for the efficient operation of a glass melting furnace.The numerical simulations of the three-dimensional turbulent flow,gas combustion and radiative heat transfer in the glass melting furnace are described in this paper.A comprehensive mathematical model is developed for simulating gas combustion and heat transfer.The standard k-ε turbulence model and EBU-Arrhenius model were incorporated into the comprehensive model.For radiative heat transfer,the conventional six heat-flux model was used.On the basis of the above mentioned mathematical model,the general numerical solution method for the differential equations and computer codes were successfully developed.The gas phase velocity distribution,temperature distribution and the heat flux from the combustion chamber to the melting glass surface are given.The predicted results show that the inlet angle has remarkable effect on the flow pattern and the heat flux distribution.It is suggested that the reasonable inlet angle should be within 5 degrees to 10 degrees.
出处
《燃烧科学与技术》
CAS
CSCD
2000年第3期244-248,共5页
Journal of Combustion Science and Technology
关键词
玻璃窑炉
燃烧
辐射传热
数值模拟
火焰
glass melting furnace
combustion
radiative heat transfer
numerical simulation
