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利用可压缩模型描述了四孔喷头顶吹超音速射流行为,并与前人实测结果对比验证了模拟结果.通过耦合VOF和Lagrange模型对纯顶吹、顶底复吹炼转炉内熔池运动进行描述,并对炉底喷嘴数量、布置进行优化.结果表明,在纯顶吹条件下,熔池的混均时间为523s,炉底区域钢液流动微弱.加入底吹氩气后,底部钢液速度增大,熔池混均时间为99s.炉底采用3个喷嘴的熔池混合效率要好于2个或4个的情况.底吹喷嘴距离炉底轴心在0.3D～0.4D区间内最佳,且应偏近于0.4D区域.
The compressible model was used to describe the top-blowing supersonic jet flow of a four-hole nozzle, and the simulation results were verified by comparison with the experimental results of the predecessors.Under the coupled VOF and Lagrange models, the movement of the pool in the top- The results show that the mixing time of the molten pool is 523s and the flow of molten steel in the furnace bottom area is weak under the condition of purely top blowing.The bottom liquid steel The mixing time of the molten pool is 99s.The mixing efficiency of the molten pool of 3 nozzles in the bottom of the furnace is better than that of 2 or 4. The bottom blowing nozzle is within the range of 0.3D to 0.4D Good, and should be close to 0.4D area.