Fluid Flow and Mechanisms of Momentum Transfer in a Six-Strand Tundish

Flow in a six-strand billet tundish, using turbulence inhibitors (TIs), was characterized using inputs of a pulsed tracer and mathematical simulations. It was found that to control turbulence attaining high fluid fractions under plug flow patterns, the key parameter for designing TIs is the dissipat...

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Bibliographic Details
Published in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2010-10, Vol.41 (5), p.962-975
Main Authors: Espino-Zárate, Aaron, Morales, Rodolfo D., Nájera-Bastida, Alfonso, Macías-Hernández, Manuel J., Sandoval-Ramos, Alejandro
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Exact sciences and technology
Fluid mechanics
Foundries
Materials Science
Metallic Materials
Metallurgy
Metals. Metallurgy
Nanotechnology
Production of metals
Structural Materials
Surfaces and Interfaces
Thin Films
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Summary:Flow in a six-strand billet tundish, using turbulence inhibitors (TIs), was characterized using inputs of a pulsed tracer and mathematical simulations. It was found that to control turbulence attaining high fluid fractions under plug flow patterns, the key parameter for designing TIs is the dissipation rate of kinetic energy. TI designs that induce steep dissipation gradients are less efficient as flow controllers than those designs that yield more prolonged dissipation gradients from the inhibitor bottom to the bulk flow. A direct relationship between the dissipation of kinetic energy and the linear acceleration of the smallest turbulent eddies in the flow was established through dimensional analysis. The inhibitor with the highest linear accelerations of eddies in the viscous sublayer at the Kolmogorov scale, for a given liquid flow rate, yields the better flow control.
ISSN:1073-5615
1543-1916
DOI:10.1007/s11663-010-9398-9