Numerical Analysis of Coupled Turbulent Flow and Macroscopic Solidification in a Round Bloom Continuous Casting Mold with Electromagnetic Stirring

2015 ◽  
Vol 86 (9) ◽  
pp. 1104-1115 ◽  
Author(s):  
Bingzhi Ren ◽  
Dengfu Chen ◽  
Hongdan Wang ◽  
Mujun Long
Keyword(s):  
Numerical Analysis ◽  
Continuous Casting ◽  
Turbulent Flow ◽  
Electromagnetic Stirring ◽  
Continuous Casting Mold ◽  
Casting Mold

scholarly journals Experimental and Numerical Analysis of the Free Surface in a Water Model of a Slab Continuous Casting Mold

2005 ◽  
Vol 45 (11) ◽  
pp. 1626-1635 ◽  
Author(s):  
Raul MIRANDA ◽  
Miguel Angel BARRON ◽  
Jose BARRETO ◽  
Luis HOYOS ◽  
Jesus GONZALEZ
Keyword(s):  
Free Surface ◽  
Numerical Analysis ◽  
Continuous Casting ◽  
Water Model ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Slab Continuous Casting

Numerical Simulation of Flow Field in Bloom Continuous Casting Mold with Electromagnetic Stirring

2010 ◽  
Vol 146-147 ◽  
pp. 272-276 ◽  
Author(s):  
Jing Zhang ◽  
En Gang Wang ◽  
An Yuan Deng ◽  
Xiu Jie Xu ◽  
Ji Cheng He
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Flow Field ◽  
Continuous Casting ◽  
Tangential Velocity ◽  
Electromagnetic Stirring ◽  
Continuous Casting Mold ◽  
Frequency Increase ◽  
Velocity Increase ◽  
Casting Mold

A coupled numerical simulation of magnetic field and flow field was conducted basing on Φ250mm bloom during continuous casting with electromagnetic stirring.The distribution of the flow field was analyzed in different current and frequency.At the same current,the velocity first decrease and then increase as the frequency increase along the casting direction.At the same frequency, tangential velocity is dominant in the radial of EMS center,velocity increase with the current. Considered the results of numerical simulation,the optimized EMS parameters of Φ250mm bloom are the stirring current of 480A and the stirring frequency of 3Hz.

scholarly journals Effect of an Electrically-Conducting Wall on Transient Magnetohydrodynamic Flow in a Continuous-Casting Mold with an Electromagnetic Brake

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 609 ◽  
Author(s):  
Zhongqiu Liu ◽  
Alexander Vakhrushev ◽  
Menghuai Wu ◽  
Ebrahim Karimi-Sibaki ◽  
Abdellah Kharicha ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Boundary Conditions ◽  
Turbulent Flow ◽  
Low Frequency ◽  
Small Scale ◽  
Continuous Casting Mold ◽  
Electromagnetic Brake ◽  
Casting Mold ◽  
Electrically Conducting ◽  
Low Frequency Oscillations

Large eddy simulation (LES) of transient magnetohydrodynamic (MHD) turbulent flow under a single-ruler electromagnetic brake (EMBr) in a laboratory-scale, continuous-casting mold is presented. The influence of different electrically-conductive boundary conditions on the MHD flow and electromagnetic field was studied, considering two different wall boundary conditions: insulating and conducting. Both the transient and time-averaged horizontal velocities predicted by the LES model agree well with the measurements of the ultrasound Doppler velocimetry (UDV) probes. Q-criterion was used to visualize the characteristics of the three-dimensional turbulent eddy structure in the mold. The turbulent flow can be suppressed by both configurations of the experiment’s wall (electrically-insulated and conducting walls). The shedding of small-scale vortices due to the Kelvin–Helmholtz instability from the shear at the jet boundary was observed. For the electrically-insulated walls, the flow was more unstable and changed with low-frequency oscillations. However, the time interval of the changeover was flexible. For the electrically-conducting walls, the low-frequency oscillations of the jets were well suppressed; a stable double-roll flow pattern was generated. Electrically-conducting walls can dramatically increase the induced current density and electromagnetic force; hence they contribute to stabilizing the MHD turbulent flow.

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