Formation Mechanism and Influence Factors of Sink Vortex Duringladle Teeming

To investigate the formation mechanism of sink vortex during ladle teeming, the effects of some factors such as Coriolis force, the position of the ladle shroud and initial tangential velocity of the fluid on the vortex formation process have been studied using numerical simulation combined with experiments. In addition, the evolution tendencies of tangential and radial velocities of the fluid over radial position were studied at certain initial tangential velocity. The results show that as for fully settled fluid, Coriolis force is the major reason for sink vortex formation and the spinor near the shroud is the initial driving force. There is no obvious effect of the ladle *国家自然科学基金项目51374021,中央高校基本科研业务费项目06102110,以及钢铁冶金新技术国家重点实验室自主研发基金项目 41603014资助 收到初稿日期: 2015-07-16,收到修改稿日期: 2015-12-19 作者简介:唐海燕,女, 1970年生,副教授,博士 DOI: 10.11900/0412.1961.2015.00391 第519-528页 pp.519-528