0
ADDITIONAL TECHNICAL PAPERS

Oscillatory Flow in a Physical Model of a Thin Slab Casting Mould With a Bifurcated Submerged Entry Nozzle

[+] Author and Article Information
Nicholas J. Lawson

Department of Aerospace, Power and Sensors, Royal Military College of Science, Cranfield University, Shrivenham, Wiltshire. SN6 8LA, United Kingdome-mail: n.j.lawson@rmcs.cranfield.ac.uk

Malcolm R. Davidson

Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australiae-mail: m.davidson@unimelb.edu.au

J. Fluids Eng 124(2), 535-543 (May 28, 2002) (9 pages) doi:10.1115/1.1459077 History: Received April 30, 2001; Accepted November 07, 2001; Online May 28, 2002
Copyright © 2002 by ASME
Your Session has timed out. Please sign back in to continue.

References

Nilles,  P., and Etienne,  A., 1991, “Continuous Casting Today—Status and Prospects,” Metallurgical Plant. and Technology International, 6, pp. 56–67.
Seyedein,  S. H., and Hasan,  M., 1997, “A Three-Dimensional Simulation of Coupled Turbulent Flow and Macroscopic Solidification Heat Transfer for Continuous Slab Casters,” Int. J. Heat Mass Transf., 40, pp. 4405–4423.
Yang,  H., Zhao,  L., Zhang,  X., Deng,  K., Li,  W., and Gan,  Y., 1998, “Mathematical Simulation on Coupled Flow, Heat, and Solute Transport in Slab Continuous Casting Process,” Metall. Mater. Trans. B, 29B, pp. 1345–1356.
Najjar,  F. M., Thomas,  B. G., and Hershey,  D. E., 1995, “Numerical Study of Steady Turbulent Flow through Bifurcated Nozzles in Continuous Casting,” Metall. Mater. Trans. B, 26B, pp. 749–764.
Thomas,  B. G., Mika,  L. J., and Najjar,  F. M., 1990, “Simulation of Fluid Flow Inside a Continuous Slab-Casting Machine,” Metall. Mater. Trans. B, 21B, pp. 387–400.
Honeyands,  T. A., and Herbertson,  J., 1995, “Flow Dynamics in Thin Slab Caster Moulds,” Steel Res., 66, pp. 287–293.
Samarasekera, I. V., Thomas, B. G., and Brimacombe, J. K., 1997, “The Frontiers of Continuous Casting,” Proceedings of The Julian Szekely Memorial Symposium on Materials Processing, Cambridge, MA, H. Y. Sohn, J. W. Evans, and D. Apelian, eds. The Minerals Metals and Materials Society, pp. 275–297.
Honeyands, T. A., Lucas, J. and Chambers, J. 1992, “Preliminary Modelling of Steel Delivery to Thin Slab Caster Moulds,” 1992 Steelmaking Conference Proceedings, Iron and Steel Society, Vol. 75, pp. 451–459, Toronto.
Honeyands, T. A. 1994, “Flow dynamics in thin slab caster moulds,” PhD dissertation, University of Newcastle, Australia.
Gupta,  D., and Lahiri,  A. K., 1994, “Water Modelling Study of the Surface Disturbances in Continuous Slab Caster,” Metall. Mater. Trans. B, 25B, pp. 227–233.
Gupta,  D., and Lahiri,  A. K., 1996, “A Water Model Study of the Flow Asymmetry Inside a Continuous Slab Casting Mold,” Metall. Mater. Trans. B, 27B, pp. 757–764.
Gupta,  D., Chakraborty,  S., and Lahiri,  A. K., 1997, “Asymmetry and Oscillation of the Fluid Flow Pattern in a Continuous Casting Mould: A Water Model Study,” ISIJ Int., 37(7), pp. 654–658.
Lawson, N. J. and Davidson, M. R. 1988, “Measurement of Cross-Flow Characteristics from a Transient Water Model of a Thin Slab Casting Mould,” IMechE Optical Methods and Data Processing in Heat and Fluid Flow, Bryanston-Cross et al., eds. pp. 301–310, IMechE, London.
Lawson N. J. and Davidson M. R., 1998, “The Application of LDA to Characterize Cross-Flow from an Oscillating Jet in a Thin Slab Casting Mould,” Proceedings 13th Australasian Fluid Mechanics Conference, M. C. Thompson, K. Hourigan, eds., Melbourne, Australia, pp. 667–670.
Lawson,  N. J., and Davidson,  M. R., 1999, “Cross-Flow Characteristics of an Oscillating Jet in a Thin Slab Casting Mould,” ASME J. Fluids Eng., 121, pp. 588–595.
Lawson,  N. J., and Davidson,  M. R., 2001, “Self-Sustained Oscillation of a Submerged Jet in a Thin Rectangular Cavity,” J. Fluids Struct., 15, pp. 59–81.
Durst, F. Melling, A. and Whitelaw, J. H. 1981, Principles and Practice of Laser Doppler Anemometry, Second Edition, Academic Press, London.
Panaras,  G. A., Theodorakakos,  A., and Bergeles,  G., 1998, “Numerical Investigation of the Free Surface in a Continuous Steel Casting Mold Model,” Metall. Mater. Trans. B, 29B, pp. 1117–1126.
Hershey,  D. E., Thomas,  B., and Najjar,  F. M., 1993, “Turbulent Flow Through Bifurcated Nozzles,” Int. J. Numer. Methods Fluids, 17, pp. 23–47.
Dring,  R. P., 1982, “Sizing Criteria for Laser Anemometry Particles,” ASME J. Fluids Eng., 104, pp. 15–17.
Rockwell,  D., and Naudasher,  E., 1979, “Self-Sustained Oscillations of Impinging Free Shear Layers,” Annu. Rev. Fluid Mech., 11, pp. 67–94.
Rockwell,  D., 1983, “Oscillations of Impinging Shear Layers,” AIAA J., 21, pp. 645–664.
Brummayer, M., Gittler, P. and Watzinger, J. 1999, “Stabilization of Unsteady Turbulent Flow in the Mold Region of a Wide Slab Caster by Submerged Entry Nozzle Design Optimization with CFD,” Proceedings Second International Conference on CFD in the Minerals and Process Industries, M. P. Schwarz, M. R. Davidson, A. K. Easton, P. J. Witt and M. L. Sawley, eds., CSIRO, Melbourne, Australia, pp. 217–222.
Chang, C., Davidson, M. R. and Lawson, N. J. 2001, “CFD Studies on Bifurcated Nozzle Jet Flow in a Water Model of a Thin Slab Casting Mould,” to be presented at the 6th World Congress of Chemical Engineering, Melbourne, Australia, 23–27 Sept. 2001.
George, W. K. Beuther, P. D., and Lumely, J. L. 1978, “Processing of Random Signals,” Proceedings of Dynamic Measurements in Unsteady Flows, S. G. Leslie, F. A. Kovasznay, P. Buchave, L. Fulachier and B. W. Hansen, eds., pp. 757–800.
Nathan,  G. J., Hill,  S. J., and Luxton,  R. E., 1998, “An Axisymmetric ‘Fluidic’ Nozzle to Generate Jet Precession,” J. Fluid Mech., 370, pp. 347–380.

Figures

Grahic Jump Location
Schematic of the flow field
Grahic Jump Location
Schematic of the experimental rig
Grahic Jump Location
Schematic showing experimental parameters
Grahic Jump Location
Schematic of the LDA and flow visualization experi-mental setup
Grahic Jump Location
u component time series at point C (casting rate 1.09 m/s, SEN submergence 120 mm)
Grahic Jump Location
Power spectrum of horizontal velocity u at monitoring points in the cross-flow for a casting rate R=1.09 m/min and SEN submergence S=120 mm
Grahic Jump Location
RMS of the horizontal velocity component (u) and the “cut-off” frequency of the oscillation at points A, B, and C versus casting rate and nozzle submergence. The cut-off frequency marks the maximum frequency of modes which together contain 90 percent of the fluctuating (horizontal) kinetic energy.
Grahic Jump Location
Plots in the central plane (z=0) of the cross-flow region showing (a) mean velocity vectors and (b) a contour map of the RMS vertical velocity (m/s) when casting rate R=1.53 m/min and SEN submergence S=120 mm
Grahic Jump Location
Mean vertical velocity (v) profile over the width of the cavity in the central plane (z=0) of the cross-flow region at various depths y when casting rate R=1.53 m/min and SEN submergence S=120 mm. The location of the SEN is marked in the center.
Grahic Jump Location
Out-of-plane mean velocity w versus transverse coordinate z at different depths y when x=130 mm for casting rate R=1.53 m/min and SEN submergence S=120 mm
Grahic Jump Location
Mean horizontal velocity u as a function of transverse coordinate z in horizontal planes at various depths y when casting rate R=1.53 m/min and SEN submergence S=120 mm. Results are shown for two values of x (+130 mm and −130 mm).
Grahic Jump Location
Mean vertical velocity v as a function of transverse coordinate z in the vertical y-z plane (perpendicular to the broad face of the cavity) at x=−130 mm (solid symbols) and x=+130 mm (open symbols) when casting rate R=1.53 m/min and SEN submergence S=120 mm
Grahic Jump Location
Full vector field of mean velocity in the central vertical plane z=0 when casting rate R=1.53 m/min and SEN submergence S=120 mm
Grahic Jump Location
Mean and RMS vertical velocity profile in the central plane z=0 at various depths y in the main body of the cavity below the SEN when casting rate R=1.53 m/min and SEN submergence S=120 mm
Grahic Jump Location
Flow visualization images of the jet at times 7.8 s apart with the jet outline marked for the base case (casting rate 1.53 m/min, SEN submergence 120 mm)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In