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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11993
Title: Numerical investigation of the effect of transitory strand opening on mixing in a multistrand tundish
Authors: Mishra S.K.
Jha, Pradeep Kumar
Sharma, Satish Chandra
Ajmani S.K.
Published in: International Journal of Minerals, Metallurgy and Materials
Abstract: In a multistrand, the outlet near the inlet produces short circuiting flow. This leads to the formation of dead zones inside the tundish, and consequently, the mean residence time decreases. In the present study, numerical investigation of mixing inside a delta shaped tundish with sloping boundaries was carried out by solving the Navier-Stokes equation and employing the standard turbulence model. To decrease the dead zone volume inside the tundish, the effect of closing the outlet near the inlet for a small amount of time and further opening it on the mixing behavior of the tundish was studied. The outlets near the inlet were closed for varying amount of time, and the transient analysis of fluid flow and the tracer dispersion study were carried out to find the mixing parameters of the tundish, namely, mean residence time and the ratio of mixed to dead volume of the tundish. An optimum closure time of the near outlet has been found, which yields best mixing inside the tundish. The numerical code was validated against the experimental observation by performing the tracer dispersion study inside a multistrand tundish and the reasonably good match between the experimental and numerical results in terms of residence time distribution (RTD) curves. The results obtained from the present study confirm the strong role of choosing the right time for opening and closing the outlets to get improved characteristics for the fluid flow and mixing behavior of the tundish. The educational version of computational fluid dynamics (CFD) software PHOENICS was used to solve the governing equations and interpret the results in different forms. © 2011 University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.
Citation: International Journal of Minerals, Metallurgy and Materials (2011), 18(5): 535-542
URI: https://doi.org/10.1007/s12613-011-0474-1
http://repository.iitr.ac.in/handle/123456789/11993
Issue Date: 2011
Keywords: Billets
Computational fluid dynamics (CFD)
Continuous casting
Dead volume
Flow simulation
Mean residence time
Tundish
ISSN: 16744799
Author Scopus IDs: 54794386400
36246292500
8142901100
6601909648
Author Affiliations: Mishra, S.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Jha, P.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Sharma, S.C., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Ajmani, S.K., Steelmaking and Casting Research Group, Tata Steel, RandD, Burma Mines, Jamshedpur 831007, Jharkhand, India
Corresponding Author: Jha, P.K.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; email: pkjhafme@iitr.ernet.in
Appears in Collections:Journal Publications [ME]

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