Numerical Simulation of Influence of Changing a Dam Height on Liquid Steel Flow and Behaviour of Non-metallic Inclusions in the Tundish

Cwudziński, A.

doi:10.5772/23699

Cited by 3 publications

(1 citation statement)

References 17 publications

(17 reference statements)

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“…Flow modifiers, such as weirs, dams, baffles, impact pads and TIs, have been tried by various steel plants and researchers around the globe. The beneficial effects as well as the detrimental aspects have been realised through actual plant trials as well as water modelling and computational fluid dynamics studies by Tacke and Ludwig,20 Sinha,21 Kemeny et al ,22 Harris and Young,23 Knoepke and Mastervich,24 Dorricott et al ,25 Emi and Habu,26 Guthrie et al ,27, 28 Cwudzinski29, 30 and many others.…”

Section: Introductionmentioning

confidence: 99%

Effect of flow modifiers on liquid metal cleanliness in four-strand delta shaped billet caster tundish

Chattopadhyay

Isac

Guthrie

2012

Ironmaking & Steelmaking

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Mathematical modelling was performed on a full scale aqueous model of a delta shaped four-strand billet caster tundish that is in operation at the RTIT (QIT) plant in Sorel-Tracy, Que., Canada. The tundish already uses a large and shallow impact pad designed by the McGill Metals Processing Centre (MMPC) and has proved to be quite successful. In the present study, 12 different combinations of flow modifiers were researched, each of which consisted of the standard impact pad (SIP) and two dams located in between the inner and outer strands. In addition, the size of the SIP was varied in four steps, and its performance was evaluated. The residual ratio of inclusion (RRI) was calculated for all 18 designs, and the best configuration was identified. Mathematically predicted RRI values were verified with existing water model data for a couple of designs.List of symbols C D drag coefficient d p diameter of the particle, m g acceleration due to gravity, m s 22 m p mass of the particle, kg Re Reynolds number u fluid velocity, m s 21 u p particle velocity, m s 21 V p volume of the particle, m 3 m viscosity of the fluid, kg m 21 s 21 r density, kg m 23 SIP standard impact pad SEN submerged entry nozzle

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Section: Introductionmentioning

confidence: 99%

Effect of flow modifiers on liquid metal cleanliness in four-strand delta shaped billet caster tundish

Chattopadhyay

Isac

Guthrie

2012

Ironmaking & Steelmaking

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Mathematical Model of Argon and Addition Mixing in Melt-Filling Tundish

Krasnikov

2021

2021 11th International Conference on Advanced Computer Information Technologies (ACIT)

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Mathematical Modeling of the Distribution of Argon in a Tundish With a Molten Metal During Filling

Krasnikov¹

2020

MPM

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The article is devoted to the mathematical description of the process of filling an intermediate ladle (tundish) with argon, which is blown into the melt stream falling from the steel casting ladle, which is common at metallurgical plants. Metallurgical plants use an intermediate ladle to reliably supply a continuous casting machine for the melt. Also important for the tundish is the removal of non-metallic inclusions using argon. The good distribution of argon bubbles in the tundish significantly influences the removal of unwanted melt components such as hydrogen and nitrogen. Given the need for gas to escape, the melt speed in the intermediate ladle should be sufficiently low, especially near outflow holes, where melt needs to be homogeneous and slow for a high–quality casting. Conducting experiments during the operation of a metallurgical plant is undesirable, costly and is accompanied by difficulties associated with high temperature and opacity of the melt. Therefore, the experiments are often carried out in laboratories on the so-called cold models, where the melt is replaced by water, argon – by air, and the tundish – by the transparent container of the rectangular shape under the conditions of similarity. Despite the obvious advantages of such cold modeling, today most experiments are still conducted on mathematical models, which are a much cheaper and low-erroneous way of predicting the development of a given process under different conditions. Mathematical modeling of melt motion helps to select the optimal geometry of the tundish, as well as the required amount of argon and usefulness of barriers on a way of melt streams. The article proposes to use the convection-diffusion equation for the argon field and the Navier-Stokes equations – for the velocity field. The numerical solution using finite volume method is well tested and provides sufficient accuracy. In addition, this method is easily parallelized to speed up computing on modern multi-core processors. A graphical user interface software application allows you to display the status of the system on the screen for further review and adoption decisions.

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Numerical Simulation of Influence of Changing a Dam Height on Liquid Steel Flow and Behaviour of Non-metallic Inclusions in the Tundish

Cited by 3 publications

References 17 publications

Effect of flow modifiers on liquid metal cleanliness in four-strand delta shaped billet caster tundish

Effect of flow modifiers on liquid metal cleanliness in four-strand delta shaped billet caster tundish

Mathematical Model of Argon and Addition Mixing in Melt-Filling Tundish

Mathematical Modeling of the Distribution of Argon in a Tundish With a Molten Metal During Filling

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