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采用ANSYS CFX12.1软件,对结晶器浸入式水口的尺寸和浸入深度进行建模,研究了相应的流场和温度场分布情况,分析了不同条件下的结晶器内流场、液面波动、温度分布及坯壳厚度。结果表明,在较小尺寸和浸入深度的水口作用下,钢液对外弧壁面的冲刷作用明显,易降低结晶器寿命。随着水口内径和浸入深度的增大,钢液面扰动减弱,易于防止卷渣。试验条件下,采用30mm内径水口、100mm浸入深度较为合理。
Using ANSYS CFX12.1 software, the size and depth of immersion nozzle of mold were modeled, the corresponding distribution of flow field and temperature field were studied, and the flow field, liquid level fluctuation, Temperature distribution and shell thickness. The results show that under the action of the smaller size and the depth of the immersion nozzle, the molten steel has an obvious scouring effect on the outer arc wall and easily reduces the mold life. As the inner diameter of the nozzle and the depth of immersion increase, the steel surface disturbance is weakened, easy to prevent the scum. Test conditions, the use of 30mm diameter nozzle, 100mm immersion depth is more reasonable.