Flow field optimization of three-stream symmetric tundish numerical simulation
LI Yanzhi1,3, LI Hongbo1,3, SUN Yanhui2, GAO Zhenwei1,3
1. Wuan Yuhua Iron and Steel Co.,Ltd., Handan 050026, Hebei, China; 2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China; 3. Hebei Cold Forming Steel Technology Innovation Center, Handan 050026, Hebei, China
Abstract：In order to further improve the product quality of a steel plant, the volume of its tundish has been expanded and the original flow structure has been changed. In this paper, the side hole of the retaining wall after the expansion of the three-stream tundish has been optimized to reduce the proportion of dead zone in the tundish and increase the utilization efficiency of the tundish. The tundish currently used in the plant has the problems of poor consistency of water inlets between streams and large proportion of dead zones. In this paper, the tundish retaining wall structure is optimized by numerical simulation using the fluent software of Ansys. Although the temperature difference between the flows in the tundish after the improvement of the side hole of the retaining wall is 0.9 ℃ higher than the original one, the proportion of dead zone is reduced from 21.48% to 14.70%, which effectively reduces the proportion of dead zone, improves the consistency between the flows in the tundish, and achieves a better metallurgical effect.
MAZUMDAR D. Transient, multiphase simulation of grade intermixing in a tundish under constant casting rate and validation against physical modeling[J]. Jom, 2018, 70(10): 2139.
SONG S C, SUN Y H, LI Y G, et al. Effects of temperature and density on transition slab length during steel grade transition[C]//TMS 152nd Annual Meeting and Exhibition, San Diego, California, USA, 2023.
HUANG X, THOMAS B G. Modeling of steel grade transition in continuous slab casting processes[J]. Metallurgical Transactions B, 1993, 24: 379.
[15]
SONG S, SUN Y, AN H. Numerical modeling of grade mixing and inclusion entrapment in eight strand billet tundish[J]. Metallurgical Research and Technology, 2023, 120(1): 112.
[16]
SIDDIQUI M I H, KIM M H. Optimization of flow control devices to minimize the grade mixing in steelmaking tundish[J]. Journal of Mechanical Science and Technology, 2018, 32: 3213.
LAUNDER B E, SPALDING D B. The numerical computation of turbulent flows[C]//Numerical prediction of flow, heat transfer, turbulence and combustion. Pergamon, 1983: 96.
2023, Vol. 42 
