Effect of Double Ruler Magnetic Field in Controlling Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold

Sarkar, Sandip; Singh, Vikas K.; Ajmani, S. K.; Ranjan, Ravi; Rajasekar, K.

doi:10.2355/isijinternational.isijint-2016-313

Cited by 20 publications

(11 citation statements)

References 18 publications

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“…The comparison result is shown in Fig. 3, 21) and can be found to be in good agreement with the experimental data. Figures 4(a)-4(c) show the effect of bubble size on the gas volume fraction distribution inside the mold.…”

Section: Numerical Methodology Grid Independence Testsupporting

confidence: 74%

“…2. 21) It is found from Fig. 2 that the grid independence situation has been achieved for 1.5 million cells, which is computationally economical for the present numerical investigation.…”

Section: Numerical Methodology Grid Independence Testmentioning

confidence: 88%

“…Figure 1 displays typical grid used for the numerical simulations. 21) To capture near-wall turbulence, the grid is refined very fine around the walls. Based on the variation of the time averaged meniscus velocity, a grid independence study has been carried out to choose optimum grid points.…”

Section: Numerical Methodology Grid Independence Testmentioning

confidence: 99%

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Effect of Argon Injection in Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold Under the Influence of Double Ruler Magnetic Field

et al. 2018

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Section: Numerical Methodology Grid Independence Testsupporting

confidence: 74%

“…2. 21) It is found from Fig. 2 that the grid independence situation has been achieved for 1.5 million cells, which is computationally economical for the present numerical investigation.…”

Section: Numerical Methodology Grid Independence Testmentioning

confidence: 88%

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Effect of Argon Injection in Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold Under the Influence of Double Ruler Magnetic Field

et al. 2018

Self Cite

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“…This ruler acts in several ways: stabilizing flow inside the nozzle, deflecting the jets exiting the ports downward, especially when the ruler is located just above the nozzle ports, which slows the flow up the narrow faces and finally by slowing the flow along the meniscus [29,[112][113][114]. The lower ruler generally tends to lessen the jet penetration depth [17,79,[114][115][116][117][118][119], which affects particle transport deep into the mold cavity, as discussed in Section 6.2.…”

Section: Double-ruler Embrmentioning

confidence: 99%

Electromagnetic Forces in Continuous Casting of Steel Slabs

Cho

Thomas

2019

Metals

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This paper reviews the current state of the art in the application of electromagnetic forces to control fluid flow to improve quality in continuous casting of steel slabs. Many product defects are controlled by flow-related phenomena in the mold region, such as slag entrapment due to excessive surface velocity and level fluctuations, meniscus hook defects due to insufficient transport of flow and superheat to the meniscus region, and particle entrapment into the solidification front, which depends on transverse flow across the dendritic interface. Fluid flow also affects heat transfer, solidification, and solute transport, which greatly affect grain structure and internal quality of final steel products. Various electromagnetic systems can affect flow, including static magnetic fields and traveling fields which actively accelerate, slow down, or stir the flow in the mold or strand regions. Optimal electromagnetic effects to control flow depends greatly on the caster geometry and other operating conditions. Previous works on how to operate electromagnetic systems to reduce defects are discussed based on results from plant experiments, validated computational models, and lab scale model experiments.

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“…Besides, other flow control technologies such as M-EMS, EMBR, new type SEN are effective and the flow patterns in the mold with these technologies are different. [13][14][15][16][17][18] But these technologies cannot solve this problem either. It needs to be solved by other optimization of the swirling method.…”

Section: Introductionmentioning

confidence: 99%

Flow Behavior in the Slab Mold under Optimized Swirling Technology in Submerged Entry Nozzle

Chen

et al. 2018

ISIJ International

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Flow behavior in the slab mold by optimized swirling flow generation in the submerged entry nozzle (SEN) is investigated. Therefore, hydromechanical model experiment was carried out to simulate this metallurgical process, the effect of turning around the nozzle with swirling and different bottom shape of nozzle is especially analyzed. The flow behavior in the mold was recorded by dye tracer and camera; The two dimension average velocity distribution in the slab mold was measured by the Ultrasound Doppler Velocimetry (UDV). The velocity distribution agrees well with flow pattern recorded by camera. The swirling flow in SEN can reduce the impinging to the narrow face and slag entrapment is inhibited by swirling. Furthermore, the flow in the mold was optimized with swirling in SEN as well as turning around the nozzle outlet in reverse, which avoids the impinging to both the wide and narrow faces of the mold at the same time. It is a potential technology for continuous casting.

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Effect of Double Ruler Magnetic Field in Controlling Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold

Cited by 20 publications

References 18 publications

Effect of Argon Injection in Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold Under the Influence of Double Ruler Magnetic Field

Effect of Argon Injection in Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold Under the Influence of Double Ruler Magnetic Field

Electromagnetic Forces in Continuous Casting of Steel Slabs

Flow Behavior in the Slab Mold under Optimized Swirling Technology in Submerged Entry Nozzle

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