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本文应用强旋湍流气一固两相流动和煤粉燃烧的数学模型，对新型涡旋燃烧炉内的流动、传热和燃烧过程进行了系统的模拟和分析，得到了与实验相符合的结果。结果表明，涡旋燃烧炉内的湍流空气动力场分布具有强旋、回流和正在发展流的特点。水冷壁总吸热量随燃烧热负荷的增大成比例地增加。煤粉颗粒在炉内的平均停留时间随初始粒径的增大而加长。炉内可实现煤粉的低温、强旋、高效率和高强度燃烧。
In this paper, the flow and heat transfer and combustion process in a new type of vortex combustor are systematically simulated and analyzed by using the mathematical model of one-solid two-phase flow and pulverized coal combustion of strong swirling gas, and the experimental results are obtained . The results show that the turbulent aerodynamic field distribution in a vortex combustor has the characteristics of strong spin, return flow and developing flow. The total heat absorption in the water wall increases proportionally with the increase of the combustion heat load. Pulverized coal particles in the furnace average residence time increases with the initial size and longer. Furnace can achieve low temperature, strong spin, high efficiency and high-intensity combustion.