Numerical simulation of different nozzle submerged depth in continous casting mold
LUO Yan-zhao1，ZHANG Li-jun1，LI Hai-bo1，CUI Yang1，NI You-jin2，PEI Xing-wei2
（1. Shougang Research Institute of Technology， Shougang Group Corporation， Beijing 100041， China 2. Qian′an Iron and Steel Company， Shougang Co.， Ltd.， Qian′an 064404， Hebei， China）
Abstract：The flow and temperature field of molten steel in mold with different nozzle submerged depth during casting the slab with the section of 1200mm×244mm was simulated by commercial software ANSYS Fluent. The results showed that when the submerged depth was 110mm，the maximum free liquid surface speed was 0.166 m/s，and the wave height was 2.4 mm. When the submerged depth increased to 130 mm，the free surface speed decreased to 0.127 m/s. But when the submerged depth varied from 130 to 170 mm，the fluctuation of free surface velocity was not obvious. With the increase of the submerged depth，the level fluctuation lower slightly. When the submerged depth was 130，150 and 170 mm，respectively，the corresponding surface wave height was 1.98，1.89，1.49 mm，respectively，whose fluction was not obvious. The temperatures of up swirl liquid steel and down liquid steel were in the range of 1 516~1 518 ℃ and 1 514~1 516 ℃，respectively，and were both homogeneous.
2016, Vol. 26 
