Effect of diameter of nozzle on fluid flow in ladle model
ZHAO Gen-an1, ZHANG Li-feng2, Alberto N. Conejo1, DUAN Hao-jian1, ZHOU Hai-chen1, DONG Jia-peng1
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. State Key Lab of Metastable Materials Science and Technology,Yanshan University, Qinhuangdao 066004, Hebei, China
Abstract:The influence of nozzle diameter on liquid steel flow in ladle was studied by using a water model with a similarity ratio of 1:10. The variation law of fluid flow with the hole diameter was investigated by measuring the velocity field on the center surface of the ladle. Results showed that within the nozzle diameter of 1-3 mm, the larger the nozzle diameter, the lower the fluid velocity near the gas column, liquid surface and ladle wall, and the more uniform the distribution of the velocity became uniform in the ladle. With the increase of the nozzle diameter, the center coordinate of vortex varied from (0.12, 0.12), to (0.12, 0.10) and (0.12,0.09). The center of vortex moved upward, but the horizontal movement was not obvious. With the increase of nozzle diameter, the bubble diameter at the bottom increased and the mixing time decreased.
赵根安, 张立峰, Alberto N. Conejo, 段豪剑, 周海忱, 董佳鹏. 吹气孔直径对钢包模型内流动的影响[J]. 中国冶金, 2020, 30(12): 22-27.
ZHAO Gen-an, ZHANG Li-feng, Alberto N. Conejo, DUAN Hao-jian, ZHOU Hai-chen, DONG Jia-peng. Effect of diameter of nozzle on fluid flow in ladle model[J]. China Metallurgy, 2020, 30(12): 22-27.
LING H T, DUAN H J, ZHANG L F. Mathematical modeling on the fluid flow during RH degassing process [J]. Journal of Metals, 2017, 114(5): 510.
[6]
Zhang L F, Duan H J, Thomas B G, et al. Fluid flow, dissolution, and mixing phenomena in argon-stirred steel ladles[J]. Metallurgical and Materials Transactions:B, 2018, 49(5): 2722.
[7]
Scheller P R, Duan H J, Ren Y, et al. Fluid flow and inclusion behavior around spherical-cap bubbles[J]. Journal of Metals, 2019, 71(1): 69.
[8]
张旭孝, 林路. 钢包底吹氩系统优化与工业试验[J]. 炼钢, 2019, 35(2): 25.
[9]
Haas T, Owusu K B, Gajjar P, et al. Interaction of injector design, bubble size, flow structure, and turbulence in ladle metallurgy[J]. Steel Research International, 2019, 90(2): 1800346.
Solorio-Diaz G, Gonzalez-Bernal R, Ramos-Banderas A, et al. Effect of the fluid-dynamic structure on the mixing time of a ladle furnace[J]. Steel Research International, 2018, 89(2): 1700281.
REN Y, DUAN H J, ZHANG L F. Effects of interphase forces on fluid flow in gas-stirred steel ladles using the eulerianLagrangian multiphase approach[J]. Journal of Metals, 2018, 70(10): 2128.
[19]
ZHANG L F. Mathematical simulation of fluid flow in gas-stirred liquid systems[J]. Modelling and Simulation in Materials Science and Engineering, 2000, 8(4): 463.
[20]
LI F, ZHANG L F. Investigation on the fluid flow and mixing phenomena in a Ruhrstahl-Heraeus (RH) steel degasser using physical modeling[J]. Journal of Metals, 2014, 66(7): 1227.