·702 工程科学学报，第40卷，第6期 浸人深度mm unsteady turbulent flow in thin slab continuous casting mold.Acta 125 135 145 155 Metall Sin,2012,48(1):23 一■一水口角度 (李宝宽，刘中秋，齐风升，等。薄板连铸坯结品器非稳态湍 ·一底部结构 流大涡模拟研究.金属学报，2012,48(1)：23) 10 ·浸人深度 [6]Liu Z Q,Li B K.Experimental studies on asymmetrical flow and 8 vortex slag entrapment in continuous casting mold.J Northeast 尖底 Univ Nat Sei,2017,38(5):666 (刘中秋，李宝宽.连铸结品器内偏流及漩涡卷渣的实验研 究.东北大学学报（自然科学版），2017,38(5)：666) ]Liu Z Q.Li L M,Qi F S,et al.Population balance modeling of 四底 polydispersed bubbly flow in continuous-casting using multiple- sizegroup approach.Metall Mater Trans B.2015,46(1):406 10 15 20 25 [8]Liu ZQ,Li B K,Jiang M F.Transient asymmetric flow and bub- 出水口角度) ble transport inside a slab continuous-casting mold.Metall Mater 图10不同浸入式水口条件下的F数 Trans B,2014,45(2):675 Fig.10 F value with different SENs Gutierrez-Montiel Y S,Morales R D.Control of meniscus stability in medium thickness-straight walls slab mould.IS//Int,2013,53 SEN附近易随机产生漩涡，最大旋转速度为0.65 (2):230 m's-1 [10]Jeon Y J,Sung H J,Lee S.Flow oscillations and meniscus fluc- (2)增大SEN出口角度和浸入深度扩大了上回 tuations in a funnel-type water mold model.Metall Mater Trans 旋区范围，进而降低结品器液面流速与波动幅度：本 B,2010,41(1):121 [11]Cai KK.Quality Control of Continuous Casting Slab.Beijing: 试验中出口角度25°条件下结晶器液面弯月面速度 Metallurgical Industry Press,2010 和剪切速度最小，分别为0.31ms1和0.17ms1: (蔡开科.连铸坯质量控制.北京：治金工业出版社，2010) 凹底SEN也有相似效果，但影响较小. [12]Teshima T,Kubota J,Suzuki M,et al.Influence of casting con (3)液面波动幅度与F数都随着SEN出口角度 ditions on molten steel flow in continuous casting mold at high 和浸入深度的增大而减小，而底部结构对其影响较 speed casting of slabs.Testu-o-Hagane,1993,79(5):576 3] 小；本试验条件下，出口角度15°、20°和浸入深度 Ren L,Zhang L F,Wang Q Q,et al.Study on fluid flow in a continuous casting slab mold using particle image velocimetry. 135mm、145mm时波动幅度为±3mm,F数值在3~ Chin J Eng,2016,38(10):1393 5之间，有利于连铸坯表面质量控制. (任磊，张立峰，王强强，等.基于PV技术的板坯连铸结晶 器内钢水流动行为研究.工程科学学报，2016,38(10)： 参考文献 1393) [Gupta D,Lahiri A K.Water-modeling study of the surface dis- [14]Lee J Y,Kim Y T,Yi K W.Analysis of the origin of periodic os- turbances in continuous slab caster.Metall Mater Trans B,1994, cillatory flow in the continuous casting mold.Met Mater Int, 25(2):227 2015,21(2):295 Najjar F M,Thomas B G,Hershey D E,et al.Numerical study of 05] Cui H,Liu Y,Li D X,et al.PIV measurement of flow field in a steady turbulent flow through bifurcated nozzles in continuous cast- water model of a continuous slab casting mold //The 6th Interna- ing.Metall Mater Trans B,1995,26(4):749 tional Congress on the Science and Technology of Steelmaking. B]Calderon-Ramos I,Morales R D.Influence of turbulent flows in Beijing,2015:633 the nozzle on melt flow within a slab mold and stability of the met- [16]Yoshida J,OhmiT,Iguchi M.Cold model study of the effects of al-flux interface.Metall Mater Trans B,2016,47(3):1866 density difference and blockage factor on mold powder entrain- 4]Peixoto JJ M.Gabriel W V,Ribeiro LQ,et al.Computational memt.SJnt,2005,45(8):1160 and physical simulation of fluid flow inside a beam blank continu- [17]Lu QT,Wang X H,Yu H X,et al.The calculation of F value ous casting mold.J Mater Process Technol,2016,233:89 and its relationship with slag entrapment in a slab continuous [5]Li B K,Liu Z Q,Qi F S,et al.Large eddy simulation for casting mold.J Unie Sci Technol Beijing,2007,29(8):811工程科学学报，第 40 卷，第 6 期 图 10 不同浸入式水口条件下的 F 数 Fig． 10 F value with different SENs SEN 附近易随机产生漩涡，最大旋转速度为 0. 65 m·s － 1 ． ( 2) 增大 SEN 出口角度和浸入深度扩大了上回 旋区范围，进而降低结晶器液面流速与波动幅度; 本 试验中出口角度 25°条件下结晶器液面弯月面速度 和剪切速度最小，分别为 0. 31 m·s － 1和 0. 17 m·s － 1 ; 凹底 SEN 也有相似效果，但影响较小． ( 3) 液面波动幅度与 F 数都随着 SEN 出口角度 和浸入深度的增大而减小，而底部结构对其影响较 小; 本试验条件下，出口角度 15°、20° 和浸入深度 135 mm、145 mm 时波动幅度为 ± 3 mm，F 数值在 3 ～ 5 之间，有利于连铸坯表面质量控制． 参 考 文 献 ［1］ Gupta D，Lahiri A K． Water-modeling study of the surface dis￾turbances in continuous slab caster． Metall Mater Trans B，1994， 25( 2) : 227 ［2］ Najjar F M，Thomas B G，Hershey D E，et al． Numerical study of steady turbulent flow through bifurcated nozzles in continuous cast￾ing． Metall Mater Trans B，1995，26( 4) : 749 ［3］ Calderon-Ｒamos I，Morales Ｒ D． Influence of turbulent flows in the nozzle on melt flow within a slab mold and stability of the met￾al-flux interface． Metall Mater Trans B，2016，47( 3) : 1866 ［4］ Peixoto J J M，Gabriel W V，Ｒibeiro L Q，et al． Computational and physical simulation of fluid flow inside a beam blank continu￾ous casting mold． J Mater Process Technol，2016，233: 89 ［5］ Li B K，Liu Z Q，Qi F S，et al． Large eddy simulation for unsteady turbulent flow in thin slab continuous casting mold． Acta Metall Sin，2012，48( 1) : 23 ( 李宝宽，刘中秋，齐凤升，等． 薄板连铸坯结晶器非稳态湍 流大涡模拟研究． 金属学报，2012，48( 1) : 23) ［6］ Liu Z Q，Li B K． Experimental studies on asymmetrical flow and vortex slag entrapment in continuous casting mold． J Northeast Univ Nat Sci，2017，38( 5) : 666 ( 刘中秋，李宝宽． 连铸结晶器内偏流及漩涡卷渣的实验研 究． 东北大学学报( 自然科学版) ，2017，38( 5) : 666) ［7］ Liu Z Q，Li L M，Qi F S，et al． Population balance modeling of polydispersed bubbly flow in continuous-casting using multiple￾size-group approach． Metall Mater Trans B，2015，46( 1) : 406 ［8］ Liu Z Q，Li B K，Jiang M F． Transient asymmetric flow and bub￾ble transport inside a slab continuous-casting mold． Metall Mater Trans B，2014，45( 2) : 675 ［9］ Gutierrez-Montiel Y S，Morales Ｒ D． Control of meniscus stability in medium thickness-straight walls slab mould． ISIJ Int，2013，53 ( 2) : 230 ［10］ Jeon Y J，Sung H J，Lee S． Flow oscillations and meniscus fluc￾tuations in a funnel-type water mold model． Metall Mater Trans B，2010，41( 1) : 121 ［11］ Cai K K． Quality Control of Continuous Casting Slab． Beijing: Metallurgical Industry Press，2010 ( 蔡开科． 连铸坯质量控制． 北京: 冶金工业出版社，2010) ［12］ Teshima T，Kubota J，Suzuki M，et al． Influence of casting con￾ditions on molten steel flow in continuous casting mold at high speed casting of slabs． Testu-to-Hagane，1993，79( 5) : 576 ［13］ Ｒen L，Zhang L F，Wang Q Q，et al． Study on fluid flow in a continuous casting slab mold using particle image velocimetry． Chin J Eng，2016，38( 10) : 1393 ( 任磊，张立峰，王强强，等． 基于 PIV 技术的板坯连铸结晶 器内钢水流动行为研究． 工程科学学报，2016，38 ( 10 ) : 1393) ［14］ Lee J Y，Kim Y T，Yi K W． Analysis of the origin of periodic os￾cillatory flow in the continuous casting mold． Met Mater Int， 2015，21( 2) : 295 ［15］ Cui H，Liu Y，Li D X，et al． PIV measurement of flow field in a water model of a continuous slab casting mold / / The 6th Interna￾tional Congress on the Science and Technology of Steelmaking． Beijing，2015: 633 ［16］ Yoshida J，Ohmi T，Iguchi M． Cold model study of the effects of density difference and blockage factor on mold powder entrain￾ment． ISIJ Int，2005，45( 8) : 1160 ［17］ Lu Q T，Wang X H，Yu H X，et al． The calculation of F value and its relationship with slag entrapment in a slab continuous casting mold． J Univ Sci Technol Beijing，2007，29( 8) : 811 · 207 ·