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由提出的侧顶复吹条件下AOD熔池内钢液流动三维数学模型的侧吹和顶吹分量对纯侧吹和纯顶吹下熔池内流体流动计算结果的叠加,处理和分析了复吹过程中120tAOD转炉及线尺寸为其1/4的水模型熔池内流体的流动.所得结果显示,该数学模型可用以模拟复吹AOD熔池内流体流动.侧吹气流对复吹AOD熔池内流体流动起主导作用,整个熔池液体同样处于活泼的搅拌和循环运动中,无明显的死区.与纯侧吹下的情况相比,顶吹气流并未改变熔池内气体搅拌和液体流动的基本特征,但会使液体局部流态显著变化.侧枪数和枪位的变化同样未改变熔池内气体搅拌和液体流动及液相湍动能分布的基本特征和规律,但会使之发生局部改变.采用6枪27°比采用7枪18°或22.5°和6枪22.5°可得更均匀的液体流场及湍动能分布.
Based on the superposition of the calculation results of the fluid flow in the molten pool under the pure side blowing and the pure top blowing by the three-dimensional mathematical model of molten steel flow in the AOD pool under the side-top blowing condition, the complex blowing process In a 120t AOD converter and its size was 1/4 of the water model.The results show that the mathematical model can be used to simulate the fluid flow in the AOD pool of the double blown AOD Leading role, the entire pool of liquid is also in a stirring and circulating activity in the same, no significant dead zone.Compared with the pure side blowing, the top blowing air flow does not change the basic characteristics of gas mixing and liquid flow in the pool, But the local fluid flow will change significantly.The changes of side gun number and gun position also did not change the basic characteristics and regularity of the gas agitation and liquid flow and liquid turbulent kinetic energy distribution in the weld pool but will cause some local changes.Using 6 The 27 ° gun gives a more even distribution of fluid flow and turbulent kinetic energy than a barrel of 18 ° or 22.5 ° with 7 guns and 22.5 ° guns.