Physical Simulation of the Flow Field in a Vertical Twin Roll Strip Caster - A Water Model Study

2014 ◽  
Vol 86 (7) ◽  
pp. 716-723
Author(s):  
Arnis Pelss ◽  
Antje Rückert ◽  
Herbert Pfeifer
Keyword(s):  
Flow Field ◽  
Physical Simulation ◽  
Water Model ◽  
Model Study ◽  
Twin Roll

scholarly journals Effect of Oscillation Parameters to Flow Field in the Pool during the Oscillating Twin-Roll Strip Casting Process

2018 ◽  
Vol 31 (1) ◽  
Author(s):  
Zhi-Qiang Xu ◽  
Zhe-Ru Meng ◽  
Shun-Hui Xue ◽  
De-Quan Zhang ◽  
Feng-Shan Du
Keyword(s):  
Flow Field ◽  
Casting Process ◽  
Strip Casting ◽  
Twin Roll

On the Flow Fields of Inertial Impactors

1974 ◽  
Vol 96 (4) ◽  
pp. 394-400 ◽  
Author(s):  
V. A. Marple ◽  
B. Y. H. Liu ◽  
K. T. Whitby
Keyword(s):  
Flow Field ◽  
Stokes Equations ◽  
Relaxation Method ◽  
Water Model ◽  
Navier Stokes ◽  
Visualization Technique ◽  
Navier Stokes Equations ◽  
Theoretical Results ◽  
Plate Distance ◽  
Good Agreement

The flow field in an inertial impactor was studied experimentally with a water model by means of a flow visualization technique. The influence of such parameters as Reynolds number and jet-to-plate distance on the flow field was determined. The Navier-Stokes equations describing the laminar flow field in the impactor were solved numerically by means of a finite difference relaxation method. The theoretical results were found to be in good agreement with the empirical observations made with the water model.

The Model Analysis of Inclusion Moving in the Swirl Flow Zone Sourcing from the Inner-Swirl-Type Turbulence Controller in Tundish

2017 ◽  
Vol 36 (5) ◽  
pp. 541-550 ◽  
Author(s):  
Yan Jin ◽  
Chen Ye ◽  
Xiao Luo ◽  
Hui Yuan ◽  
Changgui Cheng
Keyword(s):  
Flow Field ◽  
Swirling Flow ◽  
Mathematic Model ◽  
Swirl Flow ◽  
Water Model ◽  
Medium Size ◽  
Force Analysis ◽  
Inclusion Removal ◽  
Flow Band ◽  
Turbulence Inhibitor

AbstractIn order to improve the inclusion removal property of the tundish, the mathematic model for simulation of the flow field sourced from inner-swirl-type turbulence controller (ISTTC) was developed, in which there were six blades arranged with an eccentric angle (θ) counterclockwise. Based on the mathematical and water model, the effect of inclusion removal in the swirling flow field formed by ISTTC was analyzed. It was found that ISTTC had got the better effect of inhibiting turbulence in tundish than traditional turbulence inhibitor (TI). As the blades eccentric angle (θ) of ISTTC increasing, the intensity of swirling flow above it increased. The maximum rotate speed of fluid in swirling flow band driven by ISTTC (θ=45°) was equal to 25 rmp. Based on the force analysis of inclusion in swirling flow sourced from ISTTC, the removal effect of medium size inclusion by ISTTC was attributed to the centripetal force (Fct) of swirling flow, but removal effect of ISTTC to small size inclusion was more depend on its better turbulence depression behavior.

scholarly journals Mixing Phenomenon and Flow Field in Ladle of RH Process

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 886 ◽  
Author(s):  
Kaitian Zhang ◽  
Heng Cui ◽  
Rudong Wang ◽  
Yang Liu
Keyword(s):  
Flow Field ◽  
Vacuum Chamber ◽  
Mixing Time ◽  
Mixing Layer ◽  
Water Model ◽  
Utilization Rate ◽  
Rh Process ◽  
Depth Increase ◽  
The One ◽  
Gas Blowing

Particle image velocimetry (PIV) system was adopted to investigate the relationship between the mixing phenomenon and the flow field of a 210 t RH degasser by a 1:4 scale water model. The results of mixing simulation experiments indicated that the mixing time decreased with the increase of gas blowing rate. However, with the increase of Snorkel immersion depth (SID), the mixing time presented a decreasing rend firstly and then increased. The measurement of flow fields of RH ladle by PIV system can explain the phenomenon above. According to the characteristics of the flow field in RH ladle, the flow field can be divided into the mixing layer, the transition layer, and the inactive layer. On the one hand, the stirring power in RH ladle and vacuum chamber both increases with more gas blowing rate, leading to the decrease of mixing time. On the other hand, with SID increases from 400 mm to 480 mm, the gas blowing depth increase results in the mixing power increases, and the mixing time decreases at the beginning. Because of too much-molten steel in the vacuum chamber and the expanding of the inactive layer in RH ladle, however, the utilization rate of the gas driving force begins to decrease. Therefore, the mixing time started to increases with the increase of SID.

A Water-Model Study of the Ledge Heat Transfer in an Aluminium Cell

2016 ◽  
pp. 286-293
Author(s):  
John J. J. Chen ◽  
Chuck C. Wei ◽  
Antony D. Ackland
Keyword(s):  
Heat Transfer ◽  
Water Model ◽  
Model Study

Mixing Phenomena in a Bottom Blown Copper Smelter: A Water Model Study

2015 ◽  
Vol 46 (3) ◽  
pp. 1218-1225 ◽  
Author(s):  
Lang Shui ◽  
Zhixiang Cui ◽  
Xiaodong Ma ◽  
M. Akbar Rhamdhani ◽  
Anh Nguyen ◽  
...  
Keyword(s):  
Copper Smelter ◽  
Water Model ◽  
Model Study

scholarly journals Physical Simulation of Molten Steel Homogenization and Slag Entrapment in Argon Blown Ladle

Processes ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 479 ◽  
Author(s):  
Yang ◽  
Jin ◽  
Zhu ◽  
Dong ◽  
Lin ◽  
...  
Keyword(s):  
Flow Rate ◽  
Molten Steel ◽  
Physical Simulation ◽  
Mixing Time ◽  
Water Model ◽  
Steel Ladle ◽  
Argon Flow Rate ◽  
Argon Flow ◽  
Slag Thickness ◽  
Slag Entrapment

Argon stirring is one of the most widely used metallurgical methods in the secondary refining process as it is economical and easy, and also an important refining method in clean steel production. Aiming at the issue of poor homogeneity of composition and temperature of a bottom argon blowing ladle molten steel in a Chinese steel mill, a 1:5 water model for 110 t ladle was established, and the mixing time and interface slag entrainment under the different conditions of injection modes, flow rates and top slag thicknesses were investigated. The flow dynamics of argon plume in steel ladle was also discussed. The results show that, as the bottom blowing argon flow rate increases, the mixing time of ladle decreases; the depth of slag entrapment increases with the argon flow rate and slag thickness; the area of slag eyes decreases with the decrease of the argon flow rate and increase of slag thickness. The optimum argon flow rate is between 36–42 m3/h, and the double porous plugs injection mode should be adopted at this time.

Physical simulation of a single-celled tornado-like vortex, Part A: Flow field characterization

2008 ◽  
Vol 96 (8-9) ◽  
pp. 1243-1257 ◽  
Author(s):  
Amit R. Mishra ◽  
Darryl L. James ◽  
Chris. W. Letchford
Keyword(s):  
Flow Field ◽  
Physical Simulation

Effect of Cooling Rate and Si Content on Solidification Characteristics of Silicon Steel during Near-Rapid Solidification

2010 ◽  
Vol 146-147 ◽  
pp. 1247-1251
Author(s):  
Lei Wang ◽  
Xian Yong He ◽  
Qin Peng ◽  
Rong Yang ◽  
Qi Jie Zhai
Keyword(s):  
Cooling Rate ◽  
Silicon Content ◽  
Physical Simulation ◽  
Silicon Steel ◽  
Strip Casting ◽  
Contraction Rate ◽  
Linear Contraction ◽  
Si Content ◽  
Equiaxed Grains ◽  
Twin Roll

The solidification characteristics of silicon steel in twin roll strip casting was studied by physical simulation. The experiments were designed to approximate the solidification conditions of twin roll strip casting. The strips with different cooling rate and different silicon content were prepared. The results show that the solidification structures of the strips with different cooling rate and different Si content are composed of columnar and equiaxed grains, and the solidification structures vary significantly. And with the decrease of cooling rate, the linear contraction rate decreases.

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