双旋流平焰烧嘴的数值模拟

Numerical Simulation of Flat Flame Burner

为改善常规混合煤气平焰烧嘴性能,使之在更大的调节比下保持火焰形状为圆盘状,并保证对尽可能多的不同热值的混合煤气的适应性能,使用Fluent软件对实验用200 m3/h双旋流平焰烧嘴的空气旋流器、煤气旋流器等局部结构以及整体燃烧情况进行了模拟分析;得到了平焰烧嘴的温度分布、燃烧组分的浓度和流场的等参量的详细结果,模拟计算的结果与实验测试结果吻合。这些工作对改进烧嘴的设计和系列化有较强的指导作用,并显示了CFD软件在烧嘴优化设计和研究中的作用。

This paper simulates the 3D flow, combustion field of a real industry flat flame burner, and gains a detail information of the fluid flow, components distribution, which are necessary to improve the burner property. The simulated results are consistent with these of lab test well. The work in this paper show great capacity of the CFD software in the industry burner design and development.