Effect of Top‐swirling Turbulence Inhibitor on Multiphase Flow in a Single‐strand Tundish during Transient Casting

2021 ◽  
Author(s):  
Hua Zhang ◽  
Jiahui Wang ◽  
Qing Fang ◽  
Guoliang Wu ◽  
Peng Zhao ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Single Strand ◽  
Turbulence Inhibitor ◽  
Transient Casting

Investigation on the control of multiphase flow behavior in a continuous casting tundish during ladle change

2020 ◽  
Vol 117 (6) ◽  
pp. 619
Author(s):  
Rui Xu ◽  
Haitao Ling ◽  
Haijun Wang ◽  
Lizhong Chang ◽  
Shengtao Qiu
Keyword(s):  
Multiphase Flow ◽  
Flow Behavior ◽  
Rolled Strip ◽  
Impact Zone ◽  
Steel Cleanliness ◽  
Carry Over ◽  
Slag Carry Over ◽  
Hot Rolled ◽  
Turbulence Inhibitor ◽  
The Impact

The transient multiphase flow behavior in a single-strand tundish during ladle change was studied using physical modeling. The water and silicon oil were employed to simulate the liquid steel and slag. The effect of the turbulence inhibitor on the slag entrainment and the steel exposure during ladle change were evaluated and discussed. The effect of the slag carry-over on the water-oil-air flow was also analyzed. For the original tundish, the top oil phase in the impact zone was continuously dragged into the tundish bath and opened during ladle change, forming an emulsification phenomenon. By decreasing the liquid velocities in the upper part of the impact zone, the turbulence inhibitor decreased considerably the amount of entrained slag and the steel exposure during ladle change, thereby eliminating the emulsification phenomenon. Furthermore, the use of the TI-2 effectively lowered the effect of the slag carry-over on the steel cleanliness by controlling the movement of slag droplets. The results from industrial trials indicated that the application of the TI-2 reduced considerably the number of linear inclusions caused by ladle change in hot-rolled strip coils.

scholarly journals Multiphase Flow Behavior in a Single-Strand Continuous Casting Tundish during Ladle Change

2020 ◽  
Vol 60 (3) ◽  
pp. 499-508 ◽  
Author(s):  
Haitao Ling ◽  
Rui Xu ◽  
Haijun Wang ◽  
Lizhong Chang ◽  
Shengtao Qiu
Keyword(s):  
Continuous Casting ◽  
Multiphase Flow ◽  
Flow Behavior ◽  
Single Strand ◽  
Continuous Casting Tundish

scholarly journals Comparison of Fluid Flow and Temperature Distribution in a Single-Strand Tundish with Different Flow Control Devices

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 796
Author(s):  
Dong-Yuan Sheng ◽  
Dengfu Chen
Keyword(s):  
Fluid Flow ◽  
Flow Control ◽  
Single Strand ◽  
Water Model ◽  
Cfd Simulations ◽  
Flow Control Devices ◽  
Flow Heat ◽  
Control Devices ◽  
Steel Flow ◽  
Turbulence Inhibitor

The effects of flow control devices (FCD) in a single-strand tundish, including weir, dam, turbulence inhibitor and gas curtain, have been investigated using water model experiments and CFD simulations. A scaled-down water model was built up to visualize flow pattern and measure the residence-time distribution (RTD) of different tundish configurations. A CFD model was applied to calculate the fluid flow, heat transfer and RTD curves in the prototype tundish under the nonisothermal conditions. The Eulerian–Lagrangian approach was applied to investigate the bubble flow in the system. The results show that each FCD has its own unique function to control the flow. It is important to evaluate the combined effects of FCD based on their installations. The molten steel flow in the tundish could be improved if these flow control devices were arranged properly.

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