MATHEMATICAL MODELLING OF A TWIN-ROLL STRIP CASTING PROCESS WITH TURBULENT FLOW-ON MOLTEN METAL FLOWFIELD

Lee SW

Korean Journal of Chemical Engineering, Vol.9, No.4, 199-205, October, 1992

A computer model has been developed for describing the flowfield of molten metal in the twin roll strip casting process with turbulent flow. The formulation of the twin roll strip casting process was based on the turbulent Navier-Stokes equation in which allowance was made for the spatially distributed turbulent velocity field of molten metal. The equations were simplified to those for axisymmetrical flowfields and an outline of the computational approach was also given. The calculation of turbulent properties using the standard two equation k-ε turbulence model has been applied, and predicted results are presented. Also, it was found that turbulent flowfields with a recirculating zone are located in the vicinity of the middle of the rotating bank of molten metal. The size of the recirculating zone with fixed geometry configuration decreases with increasing inlet flow rate.

[References]

Yamauchi T, Nakanori T, Hasegawa M, Yabuki T, Ohnishi N, Trans. ISIJ, 28, 23 (1988)
Dancy TE, I&SM, Dec., 25 (1987)
Stanek V, Szekely J, Metal. Trans., 14B, 487 (1983)
Miyazawa K, Choh T, Inouye M, J. JIM, 46, 1102 (1982)
Bessemer H, Iron and Steel Institute (London), Autumn Meeting, Oct. 6, 1891, Also J. Metals, Nov., 1189 (1965)
Miyazawa K, Szekely J, Metal. Trans., 12A(Jun.), 1047 (1981)
Kraus HG, Numer. Heat Transf., 10, 63 (1986)
Saitoh T, Hojo H, Yaguchi H, Kang CG, Metal. Trans., 20B(Jun.), 381 (1989)
Hinze JO, "Turbulence," McGraw-Hill Book, 2nd ed., New York (1975)
Tennekes H, Lumley JL, "A First Course in Turbulence," The MIT Press, Cambridge, MA. (1972)
Rodi W, "Turbulence Models and Their Applications in Hydraulics-A State of the Art Review," 2nd ed., International Association for Hydraulic Research, Delft (1984)
Launder BE, Spalding DB, Comp. Meth. Appl. Mech. Eng., 3, 269 (1974)
Nallasamy M, Comput. Fluids, 15(2), 151 (1987)
Anderson DA, Tannehill HA, Pletcher RH, "Computational Fluid Mechanics and Heat Transfer," Hemisphere Publishing Co. (1985)
Chen YS, "A Computer Code for Three-Dimensional Incompressible Flows Using Nonorthogonal Body-Fitted Coordinates Systems," NASA CR-17 8818, Mar. (1986)
Patankar SV, "Numerical Heat Transfer and Fluid Flow," McGraw-Hill, Book Co. (1980)

[Referenced By]

[1] Yamauchi T, Nakanori T, Hasegawa M, Yabuki T, Ohnishi N, Trans. ISIJ, 28, 23 (1988)

[2] Dancy TE, I&SM, Dec., 25 (1987)

[3] Stanek V, Szekely J, Metal. Trans., 14B, 487 (1983)

[4] Miyazawa K, Choh T, Inouye M, J. JIM, 46, 1102 (1982)

[5] Bessemer H, Iron and Steel Institute (London), Autumn Meeting, Oct. 6, 1891, Also J. Metals, Nov., 1189 (1965)

[6] Miyazawa K, Szekely J, Metal. Trans., 12A(Jun.), 1047 (1981)

[7] Kraus HG, Numer. Heat Transf., 10, 63 (1986)

[8] Saitoh T, Hojo H, Yaguchi H, Kang CG, Metal. Trans., 20B(Jun.), 381 (1989)

[9] Hinze JO, "Turbulence," McGraw-Hill Book, 2nd ed., New York (1975)

[10] Tennekes H, Lumley JL, "A First Course in Turbulence," The MIT Press, Cambridge, MA. (1972)

[11] Rodi W, "Turbulence Models and Their Applications in Hydraulics-A State of the Art Review," 2nd ed., International Association for Hydraulic Research, Delft (1984)

[12] Launder BE, Spalding DB, Comp. Meth. Appl. Mech. Eng., 3, 269 (1974)

[13] Nallasamy M, Comput. Fluids, 15(2), 151 (1987)

[14] Anderson DA, Tannehill HA, Pletcher RH, "Computational Fluid Mechanics and Heat Transfer," Hemisphere Publishing Co. (1985)

[15] Chen YS, "A Computer Code for Three-Dimensional Incompressible Flows Using Nonorthogonal Body-Fitted Coordinates Systems," NASA CR-17 8818, Mar. (1986)

[16] Patankar SV, "Numerical Heat Transfer and Fluid Flow," McGraw-Hill, Book Co. (1980)