In this work a three-dimensional fluid flow and heat transfer model was developed to predict the flow pattern and superheat dissipation in funnel shaped mold of a thin slab continuous caster with a novel tetrafurcated design for the submerged entry nozzle. Low Reynolds kε turbulent model was adopted to account for the turbulent effect. The transport equations were solved numerically using finite volume method. The results were compared with a full scale water model of the caster. Good agreement between mathematical and physical models was obtained. Parametric studies were carried out to evaluate the effect of casting speed, nozzle submergence depth, and inlet temperature on the superheat dissipation, flow pattern, and surface turbulence in the mold region. The results indicate a special flow pattern and heat distribution in the caster while using a tetrafurcated nozzle. Aiming to achieve more product capacity, in the case of casting with lower superheat temperature, a higher casting speed, together with higher submergence depth, is recommended in order to avoid surface turbulence and high heat flux across the narrow face.

1.
Kill Park
,
J.
,
Sok
,
Y. U.
,
Samaresekera
,
I. V.
, and
Thomas
,
B. G.
, 2002, “
Thermal and Mechanical Behavior of Copper Molds During Thin-Slab Casting (I): Plant Trial & Mathematical Modeling
,”
Metall. Mater. Trans. B
1073-5615,
33
(
3
), pp.
437
449
.
2.
Wunnenberg
,
K.
, and
Schwerdtfeger
,
K.
, 1995, “
Principles in Thin Slab Casting
,”
Ironmaking Steelmaking
0301-9233,
22
(
4
), pp.
25
31
.
3.
Honeyands
,
T.
,
Lucas
,
J.
,
Chambers
,
J.
, and
Herbertson
,
J.
, 1992, “
Preliminary Modeling of Steel Delivery of Thin Slab Caster Molds
,”
Steelmaking Conference Proceedings
, Toronto, ON, Canada, pp.
451
459
.
4.
Thomas
,
B. G.
,
Mika
,
L. J.
, and
Najjar
,
F. M.
, 1990, “
Simulation of Fluid Flow Inside a Continuous Casting Machine
,”
Metall. Trans. B
0360-2141,
21
, pp.
387
400
.
5.
Asai
,
S.
, and
Szekeli
,
J.
, 1975, “
Turbulent Flow and Its Effect on Continuous Casting
,”
Ironmaking Steelmaking
0301-9233,
3
, pp.
205
213
.
6.
Flint
,
P. J.
, 1990, “
A Three Dimensional Finite Difference Solid of Heat Transfer, Fluid Flow and Solidification in a Continuous Slab Caster
,”
Steel Making Conference Proceedings
, pp.
481
490
.
7.
Farouk
,
B.
,
Apelian
,
D.
, and
Kim
,
Y. G.
, 1992, “
A Numerical and Experimental Study of the Solidification Rate in a Twin Belt Caster
,”
Metal. Trans. B
,
23
, pp.
477
492
. 0002-7820
8.
Shyy
,
W.
,
Pang
,
Y.
,
Hunter
,
G. B.
,
Wei
,
D. Y.
, and
Chen
,
M. -H.
, 1992, “
Modeling of Turbulent Transport and Solidification During Continuous Ingot Casting
,”
Int. J. Heat Mass Transfer
0017-9310,
35
(
5
), pp.
1229
1245
.
9.
Thomas
,
B. G.
, and
Huang
,
X.
, 1993, “
Effect of Argon Gas on Fluid Flow in a Continuous Slab Casting Mold
,”
Steelmaking Conference Proceedings
, Dallas, TX, pp.
34
42
.
10.
Aboutalebi
,
M. R.
,
Hasan
,
M.
, and
Gthrie
,
R. I. L.
, 1992, “
Heat Flow Modeling of Continuous Casting of Arbitrary Sections
,”
Steelmaking Conference Proceedings
, Vol.
75
, Toronto, Ontario, Canada, pp.
929
938
.
11.
Seyedein
,
S. H.
, and
Hassan
,
M.
, 1997, “
Three-Dimensional Simulation of Coupled Turbulent Flow and Macroscopic Solidification Heat Transfer for Continuous Slab Casters
,”
Int. J. Heat Mass Transfer
0017-9310,
40
, pp.
4405
4423
.
12.
Li
,
B.
, and
Tsukihashi
,
F.
, 2006, “
Effects of Electromagnetic Brake on Vortex Flows in Thin Slab, Continuous Casting Mold
,”
ISIJ Int.
0915-1559,
46
, pp.
1833
1838
.
13.
Torres-Alonso
,
E.
,
Morales
,
R. D.
,
Demedices
,
L. G.
,
Nájera
,
A.
,
Palafox-Ramos
,
J.
, and
Ramirez-Lopez
,
P.
, 2007, “
Flow Dynamics in Thin Slab Molds Driven by Sustainable Oscillating Jets From the Feeding SEN
,”
ISIJ Int.
0915-1559,
47
, pp.
679
688
.
14.
Thomas
,
B. G.
,
Maley
,
R. O.
, and
David
,
S.
, 2000, “
Validation of Fluid Flow and Solidification Simulation of a Continuous Thin-Slab Caster
,”
Modeling of Casting, Welding and Advanced Solidification Processes Conference
, Aachen, Germany, pp.
769
776
.
15.
Pfeiller
,
C.
,
Wu
,
M.
, and
Ludwig
,
A.
, 2005, “
Influence of Argon Gas Bubbles and Non-Metallic Inclusions on the Flow Behavior in Steel Continuous Casting
,”
Mater. Sci. Eng., A
0921-5093,
413A
, pp.
115
120
.
16.
Harlow
,
F. H.
, and
Nakayama
,
P. I.
, 1968, “
Transfer of Turbulence Energy Decay Rate
,” Los Alamos Science Laboratory Report No. LA-3854, University of California.
17.
Jones
,
W. P.
, and
Launder
,
B. E.
, 1972, “
The Prediction of Laminarization With a Two-Equation Model of Turbulence
,”
Int. J. Heat Mass Transfer
0017-9310,
15
, pp.
301
314
.
18.
Jones
,
W. P.
, and
Launder
,
B. E.
, 1973, “
The Calculation of Low-Reynolds-Number Phenomena With a Two-Equation Model of Turbulence
,”
Int. J. Heat Mass Transfer
0017-9310,
16
, pp.
1119
1130
.
19.
Launder
,
B. E.
, and
Sharma
,
B. I.
, 1974, “
Application of Energy Dissipation Model of Turbulence to the Calculation of Spinning Disc
,”
Lett. Heat Mass Transfer
0094-4548,
1
, pp.
131
138
.
20.
Patel
,
V. C.
,
Rodi
,
W.
, and
Scheuerer
,
G.
, 1985, “
Turbulence Models for Near-Wall and Low-Reynolds Number Flows: A Review
,”
AIAA J.
0001-1452,
23
(
9
), pp.
1308
1319
.
21.
Lai
,
K. Y.
, and
Guthrie
,
R. I. L.
, 1986, “
Mathematical Modeling of Flows in Large Tundish Systems in Steelmaking
,”
Metall. Trans. B
0360-2141,
17
, pp.
449
459
.
22.
Patankar
,
S. V.
, 1980,
Numerical Heat Transfer and Fluid Flow
,
Hemisphere
,
Washington, DC
.
23.
Hajari
,
A.
, and
Meratian
,
M.
, 2010, “
Surface Turbulence in a Physical Model of a Steel Thin Slab Continuous Caster
,”
Int. J. Min. Met. Mat
,
17
(
6
), pp.
697
703
.
24.
Huang
,
X.
,
Thomas
,
B. G.
, and
Najjar
,
F. M.
, 1992, “
Modeling Superheat Removal During Continuous Casting of Steel Slabs
,”
Metall. Trans. B
0360-2141,
23
, pp.
339
356
.
25.
Brimacombe
,
J. K.
, and
Samarasekara
,
I. V.
, 1994, “
The Challenge of Thin Slab Casting
,”
T. Tutkdogan Symposium beld
, Pittsburgh, pp.
29
39
.
26.
Seyedein
,
S. H.
, and
Hasan
,
M.
, 1998, “
3-D Numerical Prediction of Turbulent Flow, Heat Transfer and Solidification in a Continuous Slab Caster for Steel
,”
Can. Metall. Q.
0008-4433,
37
(
3–4
), pp.
213
228
.
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