Effects of tundish size, tundish design and casting flow rate on fluid flow phenomena of liquid steel

S. López-Ramírez, J. Palafox-Ramos, Rodolfo D. Morales, M. A. Barrón-Meza, Miguel Velázquez Toledo

Research output: Contribution to journalArticleResearchpeer-review

21 Citations (Scopus)

Abstract

Fluid dynamics of liquid steel in continuous casting tundishes is closely related to tundish volume and geometry, existence of flow control devices and steel flow rate. To study this complex interaction physical and mathematical models were used in the present work. The first one was based in a 1/3 scale water model with injection of tracers and the second one on the solution to the steady state-turbulent Navier-Stokes equations using the K-ε [1] approximation for the turbulent viscosity. When the tundish size is increased from 30 t to 50 t the tracer indicates a strong bypassing in the second case. The mathematical predictions indicate very high fluid velocities along the tundish bottom in agreement with the experimental findings. The employment of turbulence inhibitors promotes a counter-flow that surrounds the incoming stream jet of liquid from the inlet nozzle with steel displacing itself, after leaving this zone, along the upper free surface of the liquid. The addition of well designed baffles complements the action of the turbulence inhibitor to obtain a higher volume fraction under a plug flow pattern giving a softer flow of liquid steel. Besides, the positioning of baffles inside a tundish should be performed according to the steel flow rate.
Original languageAmerican English
Pages (from-to)423-428
Number of pages380
JournalSteel Research
DOIs
StatePublished - 1 Jan 1998

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Steel
fluid flow
Flow of fluids
Casting
flow velocity
Flow rate
steels
Liquids
liquids
baffles
inhibitors
tracers
Turbulence
inlet nozzles
turbulence
control equipment
counterflow
Continuous casting
fluid dynamics
plugs

Cite this

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title = "Effects of tundish size, tundish design and casting flow rate on fluid flow phenomena of liquid steel",
abstract = "Fluid dynamics of liquid steel in continuous casting tundishes is closely related to tundish volume and geometry, existence of flow control devices and steel flow rate. To study this complex interaction physical and mathematical models were used in the present work. The first one was based in a 1/3 scale water model with injection of tracers and the second one on the solution to the steady state-turbulent Navier-Stokes equations using the K-ε [1] approximation for the turbulent viscosity. When the tundish size is increased from 30 t to 50 t the tracer indicates a strong bypassing in the second case. The mathematical predictions indicate very high fluid velocities along the tundish bottom in agreement with the experimental findings. The employment of turbulence inhibitors promotes a counter-flow that surrounds the incoming stream jet of liquid from the inlet nozzle with steel displacing itself, after leaving this zone, along the upper free surface of the liquid. The addition of well designed baffles complements the action of the turbulence inhibitor to obtain a higher volume fraction under a plug flow pattern giving a softer flow of liquid steel. Besides, the positioning of baffles inside a tundish should be performed according to the steel flow rate.",
author = "S. L{\'o}pez-Ram{\'i}rez and J. Palafox-Ramos and Morales, {Rodolfo D.} and Barr{\'o}n-Meza, {M. A.} and Toledo, {Miguel Vel{\'a}zquez}",
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Effects of tundish size, tundish design and casting flow rate on fluid flow phenomena of liquid steel. / López-Ramírez, S.; Palafox-Ramos, J.; Morales, Rodolfo D.; Barrón-Meza, M. A.; Toledo, Miguel Velázquez.

In: Steel Research, 01.01.1998, p. 423-428.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Barrón-Meza, M. A.

AU - Toledo, Miguel Velázquez

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AB - Fluid dynamics of liquid steel in continuous casting tundishes is closely related to tundish volume and geometry, existence of flow control devices and steel flow rate. To study this complex interaction physical and mathematical models were used in the present work. The first one was based in a 1/3 scale water model with injection of tracers and the second one on the solution to the steady state-turbulent Navier-Stokes equations using the K-ε [1] approximation for the turbulent viscosity. When the tundish size is increased from 30 t to 50 t the tracer indicates a strong bypassing in the second case. The mathematical predictions indicate very high fluid velocities along the tundish bottom in agreement with the experimental findings. The employment of turbulence inhibitors promotes a counter-flow that surrounds the incoming stream jet of liquid from the inlet nozzle with steel displacing itself, after leaving this zone, along the upper free surface of the liquid. The addition of well designed baffles complements the action of the turbulence inhibitor to obtain a higher volume fraction under a plug flow pattern giving a softer flow of liquid steel. Besides, the positioning of baffles inside a tundish should be performed according to the steel flow rate.

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