Swirling effect in immersion nozzle on flow and heat transport in billet continuous casting mold

被引：82

作者：

Yokoya, S ^{[1
]}

Takagi, S

Iguchi, M

Asako, Y

Westoff, R

Hara, S

机构：

[1] Nippon Inst Technol, Dept Mech Engn, Minamisaitama, Saitama 3458501, Japan

[2] Hokkaido Univ, Grad Sch Engn, Div Engn & Mat Sci, Kita Ku, Sapporo, Hokkaido 0608628, Japan

[3] Tokyo Metropolitan Univ, Dept Mech Engn, Tokyo 1920364, Japan

[4] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[5] Osaka Univ, Dept Mat Sci & Proc, Suita, Osaka 5650871, Japan

来源：

ISIJ INTERNATIONAL | 1998年 / 38卷 / 08期

关键词：

uniform velocity; penetration depth; swirl; heat and mass transfer; flow pattern; swirl number; billet continuous casting mold; numerical analysis;

D O I：

10.2355/isijinternational.38.827

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A numerical analysis and water model study of the mold region of a continuous casting apparatus are performed with a novel injection concept using swirling flow in the pouring tube, to control the heat and mass transfer in the continuous casting mold. As a result, the following results were found: (1) By changing swirl strength, it is easy to control the flow pattern as well as the direction of the flow. (2) Uniform velocity distribution can be obtained within a very short distance from the outlet of the nozzle. (3) Heat and mass transfer near the meniscus can be remarkably activated compared with a conventional straight type immersion nozzle without swirl. (4) Swirl helps the superheat in the melt dissipate. (5) Penetration depth of nozzle outlet flow is decreased remarkably by the application of swirling. Those findings mentioned above are very useful to control the flow pattern in the billet and bloom continuous casters.

引用

页码：827 / 833

页数：7

共 4 条

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[2] Launder B. E., 1974, Computer Methods in Applied Mechanics and Engineering, V3, P269, DOI 10.1016/0045-7825(74)90029-2
[3] CONTROL OF IMMERSION NOZZLE OUTLET FLOW PATTERN THROUGH THE USE OF SWIRLING FLOW IN CONTINUOUS-CASTING
YOKOYA, S
ASAKO, Y
HARA, S
SZEKELY, J
[J]. ISIJ INTERNATIONAL, 1994, 34 (11) : 883 - 888
[4] NUMERICAL STUDY OF IMMERSION NOZZLE CUTLET FLOW PATTERN WITH SWIRLING FLOW IN CONTINUOUS-CASTING
YOKOYA, S
WESTOFF, R
ASAKO, Y
HARA, S
SZEKELY, J
[J]. ISIJ INTERNATIONAL, 1994, 34 (11) : 889 - 895

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