Physical and Numerical Simulation of the Fluid Flow and Temperature Distribution in Bloom Continuous Casting Mold

He, Min; Wang, Nan; Chen, Min; Xuan, Mingtao

doi:10.1002/srin.201600447

Cited by 19 publications

(10 citation statements)

References 23 publications

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“…As a consequence of the above behavior, the visualization of the process is performed in experimental facilities using water as the working fluid similarity criterion to obtain a scaled model of the system [3]. It is a frequent practice to reproduce the fluid dynamics within the mold using a scaled, physical model because of the reduced geometrical dimensions of the system and ambient temperature to prevent hazardous conditions during the process [4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Visualization and measurement of turbulent flow inside a SEN and off the ports

et al. 2021

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This work describes a visualization technique that allows to register and analyze flow inside a Submerged Entry Nozzle (SEN) model. The internal flow has a swirling pattern that produces characteristic flow conditions that can be used in efficiently supplying liquid steel from the tundish to the mold in the continuous casting process. The visualization method is a first step in analyzing the characteristics of the internal flow and hence in designing new SENs. A LED light source is employed to illuminate the SEN which reduces the reflections in the images. To enhance visualizations and measurements, a transparent cell consisting of a cubic volume with reduced dimensions was used to capture images from the high-speed camera and to record the flow pattern within the SEN. The SEN model consists of a vertical, constant diameter tube with two rounded exit ports located at the bottom with a downward angle of 15° each. The working fluid is water and reaches Re=10,000 within the cell. We also use the laser illuminated Particle Imaging Velocimetry (PIV) to calculate the velocity of fluid within the SEN and close to the exit ports. We confirm previously reported formation of three vortexes that interact with each other altering the swirl motion of the exit flow. Experimental results were compared with numerical simulations. The comparisons contribute to the validation of findings of Computational Fluid Dynamics (CFD) and Smoothed-Particle Hydrodynamics (SPH) results. Qualitative and quantitative similarities were found. Both physical and numerical results display a high turbulent flow behavior at the lower zone of the SEN. Experimental and numerical methods may be used together as a development method to measure and evaluate the characteristics of the flow behavior inside and outside the SEN model in order to design a better SEN to increase the quality of the steel slab.

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Section: Introductionmentioning

confidence: 99%

Visualization and measurement of turbulent flow inside a SEN and off the ports

et al. 2021

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“…The models of the multiphysical field and mathematical method of solutions, such as turbulent flow, heat conduction, roll rotation, convection, and radiation heat transfer, were coupled. In this calculation, the cooling water in the channel is regarded as a continuous 3D steady‐state incompressible fluid, and the momentum equation is solved by using the standard equation k–ε based on Reynolds average N–S equations …”

Section: Mathematical Modelmentioning

confidence: 99%

“…In this calculation, the cooling water in the channel is regarded as a continuous 3D steady-state incompressible fluid, and the momentum equation is solved by using the standard equation k-ε based on Reynolds average N-S equations. [9][10][11][12] Continuous equation…”

Section: Model Equationsmentioning

confidence: 99%

Numerical Simulation of Heat Transfer between Roll and Slab under Dry Secondary Cooling in Ultrathick Slab Continuous Casting

Liu

Long

et al. 2019

steel research int.

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A 3D model of heat transfer between the circular‐distributed water channel roll (CDWCR) and slab during ultrathick slab continuous casting process is established, considering the structure of water channels inside CDWCR and rotating contact between the roll and slab. The results show that the contribution of conduction heat transfer in the heating process of the roll is greater than that of radiation heat transfer, and maximum surface temperature of the roll is 460 K, located at the place where it is right out of contact with the slab, and the change of internal temperature of the roll lags behind the change of surface temperature. The temperature decreases gradually from the outside to the inside in the radial direction. The temperature of the CDWCR inside the circle of cooling water channels is no more than 325 K. The yield strength of CDWCR is analyzed, showing that the strength of the roll meets the requirements of using it in the process. In addition, the orthogonal method is used to analyze the influence factors on CDWCR temperature. The results indicate that the orders of factors affecting more are the contact angle, the slab temperature, the casting speed, and the inlet speed of cooling water.

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“…In the process of hot stamping, the design of the cooling water channel in the mold has a very important in uence on the forming of parts [3][4][5][6][7] . By optimizing the cooling water channel of the mold, not only the cooling period of the parts can be shortened, but also the defects of the product can be reduced, and the accuracy and the mechanical performance of the product can be improved [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Improved hole wall roughness and corrosion resistance of U-shaped hole prepared by casting

Cao

et al. 2021

Int J Adv Manuf Technol

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The corrosion resistance of the cooling water channel in the water-cooled mold has an important impact on the application of the mold. In this paper, the in uence of experimental temperature on roughness and corrosion resistance of U-shaped cooling channels prepared by casting is analyzed in detail. The results show that the experimental temperature increased from 998K to 1048K, the hole wall roughness of the Ushaped hole decreased from 83.264 to 76.287. However, the hole wall roughness increased with a further increase in temperature. Because the low experimental temperature will promote the formation of micro bulges and river ripples on the hole wall. However, with the temperature gradually increased, it will promote the aluminum matrix to react with the carbon ber, which will increase the roughness. The corrosion performance analysis results show that a reasonable experimental temperature is bene cial to reduce the roughness of the hole wall and improve the corrosion resistance of the cooling channel. When the roughness is large, the ravines on the rough surface are easy to be the starting point of corrosion. At the same time, it is easy to cause the aggregation of Si elements to the hole wall at high experimental temperature, which will also cause corrosion. As a result, reasonable experimental temperature plays an important role in improving the corrosion resistance of the U-shaped cooling channel.

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Physical and Numerical Simulation of the Fluid Flow and Temperature Distribution in Bloom Continuous Casting Mold

Cited by 19 publications

References 23 publications

Visualization and measurement of turbulent flow inside a SEN and off the ports

Visualization and measurement of turbulent flow inside a SEN and off the ports

Numerical Simulation of Heat Transfer between Roll and Slab under Dry Secondary Cooling in Ultrathick Slab Continuous Casting

Improved hole wall roughness and corrosion resistance of U-shaped hole prepared by casting

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