板坯连铸结晶器内钢液的三维流场数值模拟
Numerical Simulation of 3-D Flow Field of Molten Steel in Slab Continuous Casting Mould
陈登明， 王宏丹， 杨治立
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作者单位：（重庆科技学院 冶金与材料工程学院，重庆 401331）
中文关键字：板坯连铸； 结晶器 ； 流场； 数值模拟
英文关键字：slab continuous casting; mould; flow field; numerical simulation
中文摘要：采用数值模拟的方法，建立了描述某厂结晶器内钢液流动的数学模型；用有限体积法求解，研究了结晶器内的钢液流动行为，详细分析了结晶器浸入式水口（SEN）插入深度、侧孔倾角和拉速对结晶器内钢液流场的影响。得出了适合该厂连铸工艺条件的浸入式水口形式和拉坯速度，即水口合理的出口倾角应为向下15°左右；在水口结构一定条件下，水口插入深度140～170 mm比较适宜；合理的拉速应控制在1.4 ～2.0 m/min。
英文摘要： Using numerical simulation method, taking slab continuous casting in a factory as research object, the mathematical models of molten steel flow field in a continuous casting mould were established; the flow behavior of molten steel in the mould was studied using finite volume method, the influence of the immersion depth of submerged entry nozzle (SEN), the outlet inclination angle of SEN and the casting speed on the flow field of molten steel in the mold were analyzed. The suitable parameters of SEN and the casting speed under continuous casting technical conditions of the factory are obtained, that is the optimum outlet angle -15°, the advisable immersed depth 140～170 mm and the casting speed 1.4 ～ 2.0 m/min.