Large Eddy Simulation of Multi-Phase Flow and Slag Entrapment in a Continuous Casting Mold

被引：25

作者：

Li, Xianglong ^{[1
,2
]}

Li, Baokuan ^{[1
]}

Liu, Zhongqiu ^{[1
]}

Niu, Ran ^{[1
]}

Liu, Yanqiang ^{[3
]}

Zhao, Changliang ^{[3
]}

Huang, Caide ^{[3
]}

Qiao, Huanshan ^{[3
]}

Yuan, Tianxiang ^{[3
]}

机构：

[1] Northeastern Univ, Sch Met, Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China

[2] Yingkou Inst Technol, Dept Mech & Power Engn, 46 Bowen Rd, Xishi Dist 115014, Yingkou, Peoples R China

[3] Shougang Jingtang United Iron & Steel Co Ltd, Dept Steelmaking, Tangshan 063200, Peoples R China

来源：

METALS | 2019年 / 9卷 / 01期

基金：

中国国家自然科学基金;

关键词：

large eddy simulation; volume of fluid; discrete particle model; slag entrapment; continuous casting mold; MODEL INVESTIGATIONS; POWDER ENTRAPMENT; 2-PHASE FLOW; WATER-MODEL; MECHANISM;

D O I：

10.3390/met9010007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A transient, three-dimensional mathematical model has been developed to study the slag entrapment in a continuous casting mold. The unsteady turbulent flow is computed using the large eddy simulation (LES). The sub-grid scale structure is modeled by the Smagorinsky-Lilly model. The movements of discrete bubbles, as well as three continuous phases (air-slag-steel), are described by solving the coupled discrete particle model and volume of fraction (DPM+VOF) approach. The bubble transport inside different phases (steel and slag) and the escape near the air-slag interface are well studied. Good agreement is obtained by comparing with the plant observation of the slag eyes on the top surface of the mold. Three main mechanisms of slag entrapment are identified; vortex formation, shear-layer instability, and meniscus fluctuation. Four stages are observed for a slag entrapment: deformation, necking, breaking, and dragging in the mold. The model is helpful for understanding the formation of slag entrapment during continuous casting.

引用

页数：13

共 25 条

[1] Numerical Investigation of the Free Surface in a Model Mold
Asad, Amjad
Kratzsch, Christoph
Schwarze, Ruediger
[J]. STEEL RESEARCH INTERNATIONAL, 2016, 87 (02) : 181 - 190
[2] Physical Modeling of Mold Slag Entrainment in Continuous Steel Casting Mold with Consideration the Impact of Mold Powder Layer
Bielnicki, Marcin
Jowsa, Jan
[J]. STEEL RESEARCH INTERNATIONAL, 2018, 89 (09)
[3] Effect of Electromagnetic Ruler Braking (EMBr) on Transient Turbulent Flow in Continuous Slab Casting using Large Eddy Simulations
Chaudhary, R.
Thomas, B. G.
Vanka, S. P.
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2012, 43 (03): : 532 - 553
[4] Model Investigations on the Stability of the Steel-Slag Interface in Continuous-Casting Process
Hagemann, Rene
Schwarze, Ruediger
Heller, Hans P.
Scheller, Piotr R.
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2013, 44 (01): : 80 - 90
[5] Hibbeler L.C., 2013, P IR STEEL TECHN C A
[6] Model study on the entrapment of mold powder into molten steel
Iguchi, M
Yoshida, J
Shimizu, T
Mizuno, Y
[J]. ISIJ INTERNATIONAL, 2000, 40 (07) : 685 - 691
[7] PHYSICAL AND NUMERICAL INVESTIGATIONS OF MOULD FLUX ENTRAINMENT INTO LIQUID STEEL
Jowsa, J.
Bielnicki, M.
Cwudzinski, A.
[J]. ARCHIVES OF METALLURGY AND MATERIALS, 2016, 61 (04) : 2043 - 2049
[8] Water-model experiment on melting powder trapping by vortex in the continuous casting Mold
Kasai, Norifumi
Iguchi, Manabu
[J]. ISIJ INTERNATIONAL, 2007, 47 (07) : 982 - 987
[9] Vortexing flow patterns in a water model of slab continuous casting mold
Li, B
Tsukihashi, F
[J]. ISIJ INTERNATIONAL, 2005, 45 (01) : 30 - 36
[10] Large Eddy Simulation of Electromagnetic Three-Phase Flow in a Round Bloom Considering Solidified Shell
Li, Xianglong
Li, Baokuan
Liu, Zhongqiu
Niu, Ran
Huang, Xuechi
[J]. STEEL RESEARCH INTERNATIONAL, 2019, 90 (04)

← 1 2 3 →