连铸不同水口浸入深度下结晶器内钢水流场和温度场的数值模拟  

Numerical Simulation of Nozzle Immersion Depth in Continuous Casting Mold

作　　者：罗衍昭[1] 张利君[1] 李海波[1] 崔阳[1] 倪有金[2] 裴兴伟 

机构地区：[1]首钢技术研究院 [2]首钢股份公司迁安钢铁公司

出　　处：《首钢科技》2016年第6期29-35,40,共8页Shougang Science and Technology

摘　　要：利用ANSYS Fluent软件对现场浇铸1200mm×244mm断面连铸坯在不同水口浸入深度下结晶器内钢水的流场和温度场进行数值模拟计算。结果表明，当水口浸入深度为110mm时，自由液面的最大流速为0．166m/s；当水口浸入深度增加至130mm后，自由液面的流速降至0．127m／s，但水口浸入深度在130～170mm之间变化时，自由液面的流速波动不明显。不同水口浸入深度下结晶器内上旋流钢水大部分温度为1516～1518℃，下旋流钢水温度基本为1514～1516℃，温度分布比较均匀，水口浸入深度对自由液面的温度没有明显影响。The effects of nozzle immersion depth on flow and temperature field of molten steel in section 1 200 mm× 244 mm mold were studied by commercial software ANSYS Fluent. The results showed that, when the immersion depth was 110 mm, the maximum velocity of free liquid surface was 0. 166 m/s, the wave height was 2.4 mm. As the immersion depth was increased to 130 mm, the free liquid surface velocity was decreased to 0. 127 m/s, while the immersion depth varied from 130 mm- 170 mm, the fluctuation of free liquid surface velocity was not obvious. With the increasing of immersion depth, the level fluctuation lowered slightly. When the immersion depth were 130 mm, 150 mm and 170 mm, the surface wave height were 1.98 ram, 1.89 mm and 1.49 mm respectively. The effects of different immersion depth on temperature field of molten steel in mold was also not obvious. When the temperature of up swirl liquid steel was 1 516 - 1 518 ℃ the temperature of down swirl liquid steel was 1 514 - 1 516 ℃, which showed that the temperature distribution was uniform in mold.

关 键 词：水口浸入深度 数值模拟 流场 温度场 

分 类 号：TF777[冶金工程—钢铁冶金]