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采用独立开发的近流线数值模拟方法 ,对大型四角切圆炉膛中具有复杂结构喷嘴射流的炉内流场进行了数值模拟 ,同时与三维热线风速仪的测量结果相对照 ,证明了该数值模拟方法较好地解决了在计算区域由于合速度方向与网格线方向之间有较大夹角而产生的伪扩散问题 ,并详细地模拟了复杂的燃烧器喷嘴结构和炉膛的大切角结构 ,准确地反映了复杂的燃烧器喷嘴射流和实际炉内燃烧区域的流场特征 ,较好的实现了近流线的数值计算。
A numerical simulation method of near-streamline numerical simulation developed independently was used to numerically simulate the flow field inside a large square tangential hearth furnace with jets of complex structures. In comparison with the measurement results of a three-dimensional hot-wire anemometer, it was proved that this numerical simulation The method solves the problem of spurious diffusion in the calculation area due to the large included angle between the direction of combined velocity and the direction of grid lines. The complicated nozzle structure of burner and large chamfered angle of furnace are simulated in detail. Accurately reflects the complex burner nozzle jet and the actual combustion area of the furnace flow field characteristics, the better realization of the near streamline numerical calculation.