CSP结晶器内钢液面动态失稳现象的水模型实验  

Water modeling study on the meniscus dynamic distortion of molten steel level in a CSP thin slab casting mould

作　　者：王现辉[1] 王新华[1] 张炯明[1] 景财良[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《北京科技大学学报》2009年第2期234-239,共6页Journal of University of Science and Technology Beijing

摘　　要：利用1∶1的水力学模型对双侧孔水口下CSP结晶器内部流场流动进行了瞬态研究.结果表明,液面波动具有明显的周期性加剧现象,称之为"液面动态失稳".讨论了不同工艺参数下液面动态失稳的规律,用示踪实验法研究了流场内部的流动特征,分析了"液面动态失稳"与内部流场运动关系.液面的动态失稳现象主要是结晶器内的湍动能由下而上聚集并迅速耗散引起.Full-scale water modeling experiments were carried out to investigate the transient fluid flow in a CSP funnel-shaped mould under a bilateral hole submerged entry nozzle （SEN）. The results show that molten steel level is unsteady and the level fluctuation has a periodical exacerbation, which is called meniscus dynamic distortion （MDD）. The relationship between process parameters and MDD was discussed. Tracer experiments were used to study the flow characteristic of molten steel in the mold. It is concluded that the turbulent kinetic energy assembling and rapid dissipating from bottom to meniscus cause the MDD.

关 键 词：CSP结晶器 水模型 液面波动 流动特征 

分 类 号：TF777.1[冶金工程—钢铁冶金]