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运用Fluent软件,对断面150 mm×460 mm的板坯结晶器钢液流场进行了数值模拟,研究了不同水口侧孔面积和长宽比条件下流场的变化情况,并对倾角和插入深度等参数进行了优化。结果表明,长宽比一定时,面积比越大则液面最大速度越小,冲击深度和冲击压力也越小。面积比一定时,大的长宽比有利于减小液面最大速度、冲击压力以及流股对窄面的冲刷。确定了在不改变水口内径、底面形状和出口形状的前提下,适合该结晶器水口的侧孔断面为25 mm×40 mm,倾角为15°,插入深度为200 mm。
The flow field of slab mold with 150 mm × 460 mm section was numerically simulated by Fluent software. The changes of flow field under different nozzle area and aspect ratio were studied. The inclination and depth of penetration Other parameters were optimized. The results show that when the aspect ratio is constant, the larger the area ratio is, the smaller the maximum liquid velocity is and the smaller the impact depth and impact pressure are. When the area ratio is constant, the large aspect ratio helps to reduce the maximum velocity of the liquid surface, the impact pressure and the erosion of the narrow stream on the stream. Under the premise of not changing the inner diameter, bottom shape and outlet shape of the nozzle, the cross section of the side hole suitable for the mold nozzle is 25 mm × 40 mm, the inclination angle is 15 ° and the insertion depth is 200 mm.