·524 北京科技大学学报 第34卷 半径沿中心方向先增大后减小，呈“V”分布 in round billet continuous casting of steel.Acta Metall Sin,2010, (3)施加磁场作用后，夹杂物在电磁力的作用 46(4):479 (苏志坚，李德伟，孙立为，等.圆坯连铸电磁旋流水口的数值 下向水口中心区域运动，导致水口内壁附近夹杂物 模拟.金属学报，2010,46(4)：479) 粒子数密度及体积分数减少，降低了夹杂物在内壁 6] Geng D Q.Lei H.He J C.Analysis of technological parameters of 面的沉积吸附速率；另一方面，电磁力加速了夹杂物 traveling magnetic field affecting circulation flow rate in RH.fron 向壁面的湍流扩散，在一定程度上促进了夹杂物在 Seel,2009,44(6):32 内壁的沉积 (耿佃桥，雷洪，赫冀成.影响RH循环流量的行波磁场工艺参 (4)在施加旋转磁场条件下，钢液区最大磁感 数分析.钢铁，2009,44(6)：32) Glicre A,Masse P,Fautrelle Y.Finite element-finite difference 应强度存在一个最佳值，可使水口内壁吸附夹杂物 computation of magnetic and turbulent flow coupled problem. 速率最小，因此选取适当的励磁电流参数可减轻水 IEEE Trans Magn,1988,24(1):252 口内壁的结瘤现象 [8]Lei H,Geng D Q,He J C.A continuum model of solidification and inclusion collision-growth in the slab continuous casting cast- em.IS01mt,2009,49(10):1575 参考文献 [9]Geng D Q,Lei H,He J C.Numerical simulation for collision and [1]Bai H,Thomas BG.Turbulent flow of liquid steel and argon bub- growth of inclusions in ladles stirred with different porous plug con bles in slide-gate tundish nozzles:Part I.Model development f6 gurations..1S0It,2010,50(11):1597 and validation.Metall Mater Trans B,2001,32 (2):253 [10]Lei H,Wang L,Wu Z,et al.Collision and coalescence of alu- 2]Tsukaguchi Y,Nakamura 0,Jonsson P,et al.Design of swirling mina particles in the vertical bending continuous caster.ISI/Int, flow submerged entry nozzles for optimal head consumption be- 2002,42(7):717 tween tundish and mold./S/J Int,2007,47 (10)1436 [11]Chung S I,Shin Y H,Yoon J K.Flow characteristics by induc- B]Yokoya S,Takagi S,Iguchi M,et al.Swirling effect in immersion tion and gas stirring in ASEA-SKF ladle.IS//Int,1992,32 nozzle on flow and heat transport in billet continuous casting mold. (12):1287 S01t,1998,38(8):827 [12]Li K,Shu D,Wang J,et al.Theoretical study on separation of 4]Yuan F M,Wang X H,Zhan J M,et al.Numerical simulation of nonmetallic inclusion particles from a hollow cylindrical melt in Al2O:deposition at a nozzle during continuous casting.I Unin Sci alternating electromagnetic field.IS//Int,2004,44(4):647 Technol Beijing,2008,15 (3)227 13] Linder S.Hydrodynamics and collisions of small particles in a [5]Su Z J,Li D W,Sun L W,et al.Numerical simulation of swirling turbulent metallic melt with special reference to deoxidation of flow in immersion nozzle induced by a rotating electromagnetic field steel.Scand J Metall,1974,3(4):137北 京 科 技 大 学 学 报 第 34 卷 半径沿中心方向先增大后减小，呈“V”分布． ( 3) 施加磁场作用后，夹杂物在电磁力的作用 下向水口中心区域运动，导致水口内壁附近夹杂物 粒子数密度及体积分数减少，降低了夹杂物在内壁 面的沉积吸附速率; 另一方面，电磁力加速了夹杂物 向壁面的湍流扩散，在一定程度上促进了夹杂物在 内壁的沉积． ( 4) 在施加旋转磁场条件下，钢液区最大磁感 应强度存在一个最佳值，可使水口内壁吸附夹杂物 速率最小，因此选取适当的励磁电流参数可减轻水 口内壁的结瘤现象． 参 考 文 献 ［1］ Bai H，Thomas B G． Turbulent flow of liquid steel and argon bub￾bles in slide-gate tundish nozzles: Part Ⅰ． Model development and validation． Metall Mater Trans B，2001，32( 2) : 253 ［2］ Tsukaguchi Y，Nakamura O，Jnsson P，et al． Design of swirling flow submerged entry nozzles for optimal head consumption be￾tween tundish and mold． ISIJ Int，2007，47( 10) : 1436 ［3］ Yokoya S，Takagi S，Iguchi M，et al． Swirling effect in immersion nozzle on flow and heat transport in billet continuous casting mold． ISIJ Int，1998，38( 8) : 827 ［4］ Yuan F M，Wang X H，Zhan J M，et al． Numerical simulation of Al2O3 deposition at a nozzle during continuous casting． J Univ Sci Technol Beijing，2008，15( 3) : 227 ［5］ Su Z J，Li D W，Sun L W，et al． Numerical simulation of swirling flow in immersion nozzle induced by a rotating electromagnetic field in round billet continuous casting of steel． Acta Metall Sin，2010， 46( 4) : 479 ( 苏志坚，李德伟，孙立为，等． 圆坯连铸电磁旋流水口的数值 模拟． 金属学报，2010，46( 4) : 479) ［6］ Geng D Q，Lei H，He J C． Analysis of technological parameters of traveling magnetic field affecting circulation flow rate in RH． Iron Steel，2009，44( 6) : 32 ( 耿佃桥，雷洪，赫冀成． 影响 RH 循环流量的行波磁场工艺参 数分析． 钢铁，2009，44( 6) : 32) ［7］ Gliere A，Masse P，Fautrelle Y． Finite element-finite difference computation of magnetic and turbulent flow coupled problem． IEEE Trans Magn，1988，24( 1) : 252 ［8］ Lei H，Geng D Q，He J C． A continuum model of solidification and inclusion collision-growth in the slab continuous casting cast￾er． ISIJ Int，2009，49( 10) : 1575 ［9］ Geng D Q，Lei H，He J C． Numerical simulation for collision and growth of inclusions in ladles stirred with different porous plug con￾figurations． ISIJ Int，2010，50( 11) : 1597 ［10］ Lei H，Wang L，Wu Z，et al． Collision and coalescence of alu￾mina particles in the vertical bending continuous caster． ISIJ Int， 2002，42( 7) : 717 ［11］ Chung S I，Shin Y H，Yoon J K． Flow characteristics by induc￾tion and gas stirring in ASEA-SKF ladle． ISIJ Int，1992，32 ( 12) : 1287 ［12］ Li K，Shu D，Wang J，et al． Theoretical study on separation of nonmetallic inclusion particles from a hollow cylindrical melt in alternating electromagnetic field． ISIJ Int，2004，44( 4) : 647 ［13］ Linder S． Hydrodynamics and collisions of small particles in a turbulent metallic melt with special reference to deoxidation of steel． Scand J Metall，1974，3( 4) : 137 ·524·