Optimization of flow control devices for a T-type five-strand billet caster tundish: water modeling and numerical simulation

He, Fei; Zhang, Lingying; Xu, Qingyu

doi:10.1007/s41230-016-5132-9

Cited by 23 publications

(12 citation statements)

References 13 publications

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“…The cost of experiments could be reduced significantly by numerical simulation [ 5 ], and the accuracy of numerical results can be verified [ 11 , 12 ]. With a focus on the control of the flow field in tundish, some kinds of flow control devices have been investigated to achieve desirable performance [ 13 , 14 , 15 , 16 , 17 ], such as turbulence inhibitors, dams, weirs, and walls. Heaslip et al [ 18 ] studied the influence of turbulence inhibitors on the flow inside tundish and found that their use increases the negative effect of eddy near the fluid jet.…”

Section: Introductionmentioning

confidence: 99%

Design Improvement of Four-Strand Continuous-Casting Tundish Using Physical and Numerical Simulation

Qin²,

Zhang³

et al. 2023

Materials

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The flow pattern is vital for the metallurgical performance of continuous casting tundishes. The purpose of this study was to design and optimize the flow characteristics inside a four-strand tundish. Numerical simulations and water model experiments were validated and utilized to investigate the flow behavior. The effect of different flow rates in the original tundish was evaluated; two modified retaining walls and a new ladle shroud were designed for optimization. The molten steel inside the original tundish tends to be more active as the flow rate increases from 3.8 L/min to 6.2 L/min, which results in a reduction in dead volume from 36.47% to 17.59% and better consistency between different outlets. The dead volume and outlet consistency inside the tundish are improved significantly when the modified walls are applied. The proper design of the diversion hole further enhances the plug volume from 6.39% to 13.44% of the tundish by forming an upstream circular flow in the casting zone. In addition, the new trumpet ladle shroud demonstrates an advantage in increasing the response time from 152.5 s to 167.5 s and alleviating the turbulence in the pouring zone, which is beneficial for clean steel production.

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Section: Introductionmentioning

confidence: 99%

Design Improvement of Four-Strand Continuous-Casting Tundish Using Physical and Numerical Simulation

Qin²,

Zhang³

et al. 2023

Materials

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“…Therefore, it is important to test different types of tundish [1][2][3][4][5][6][7][8][9], including those optimized by blowing the liquid steel with an inert gas [10][11][12][13] or heating it in the tundish by means of induction [14][15]. Flow control devices, such as weirs, dams [16][17][18] or turbulence inhibitors [9,19] are most often used to modify the hydrodynamic conditions in a tundish. The use of a ladle shroud (LS) as a device for shaping the hydrodynamics of the flow, without using dams or weirs, seems a promising approach.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Influence of the Modification of the Ladle Shroud on Fluid Flow Behavior in a One-strand Tundish during Continuous Steel Casting

Suchan

Cwudziński

2021

JCME

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A tundish is a device from which liquid steel is pour into a mold. Therefore tundish hydrodynamic conditions have a significant impact on solidification during continuous steel casting (CSC) process. Modification of ladle shroud workspace, allows for the modification of liquid steel movement in the tundish. In the following work, numerical simulations were performed which allowed the impact of the modification of the ladle shroud workspace on the liquid steel flow structure in a one-strand tundish to be determined. In order to assess the impact of the modification of the ladle shroud on the behavior of the liquid steel in the tundish, simulations were performed, on the basis of which the percentage share of stagnant, ideal mixing and plug flow zones were determined. In addition, the mixing parameters were determined, allowing the estimation of casting duration during sequential casting. The flow fields of liquid steel for each modification of the ladle shroud were performed. The average velocity of liquid steel flowing through the tundish, the Reynolds number and turbulent intensity were also described. The obtained results showed, among others, that the application of three cylinders with a diameter of 0.041 m into the ladle shroud with a diameter of 0.11 m increases the share of active flow in the tundish in relation to the tundish with Conventional Ladle Shroud. At the same time, applying a ladle shroud with a diameter of 0.11 m during casting is the most favorable in relation to the hydrodynamics of the tundish.

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“…With focus on optimization of FCD design within the tundish, engineers have carried out a large number of investigations using experimental and numeric approaches in order to address the relevant design parameters that govern the desirable performance features. The literature on tundish design is summarized in Table 1 [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The aforementioned studies have led to considerable improvements in understanding various transport processes associated with tundish operations, aiming for the optimal tundish design.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of a Single-Strand Tundish Based on CFD-Taguchi-Grey Relational Analysis Combined Method

Sheng

2020

Metals

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A novel digital design methodology that combines computational fluid dynamics (CFD) modelling and Taguchi-Grey relational analysis method was presented for a single-strand tundish. The present study aimed at optimizing the flow control device in the tundish with an emphasis on maximizing the inclusion removal rate and minimizing the dead volume fraction. A CFD model was employed to calculate the fluid flow and the residence-time distribution of liquid steel in the tundish. The Lagrangian approach was applied to investigate the behavior of non-metallic inclusions in the system. The calculated residence-time distribution curves were used to analyze the dead volume fraction in the tundish. A Taguchi orthogonal array L9(3^4) was used to analyze the effects of design factors on both single and multiple responses. Moreover, for the purpose of meeting the multi-objective target functions, grey relational analysis and analysis of variance were used. The optimum positions of the weir and the dam were obtained based on the design targets. A special focus of this study was to demonstrate the capabilities of the Taguchi-Grey relational analysis method as a powerful means of increasing the effectiveness of CFD simulation.

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Optimization of flow control devices for a T-type five-strand billet caster tundish: water modeling and numerical simulation

Cited by 23 publications

References 13 publications

Design Improvement of Four-Strand Continuous-Casting Tundish Using Physical and Numerical Simulation

Design Improvement of Four-Strand Continuous-Casting Tundish Using Physical and Numerical Simulation

Numerical Analysis of the Influence of the Modification of the Ladle Shroud on Fluid Flow Behavior in a One-strand Tundish during Continuous Steel Casting

Design Optimization of a Single-Strand Tundish Based on CFD-Taguchi-Grey Relational Analysis Combined Method

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