Tundish Vortex and Short Circuit Formation Effects on Steel Flow Patterns Stability inside a Slab Mould
The main aim of this modelling study is to evaluate the way that tundish vortexes and short circuits formation affects the bulk liquid steel flow in a conventional slab mould.For this a mathematical model was developed,coupling the tundish and the mould in the same model,which includesthe fundamental equations for continuity and momentum,together with a turbulence model and a multiphase model,solved using commercial CFD software.The results show that simulating molten steel flow inside the mould without considering the effects of flow control valves,such sliding gates,and vortex and short circuits phenomena present in the tundish can be considered symmetrical,observing only permanent phenomena,such as backflow and gentle jets periodic oscillations.Now considering the sliding gate opened to half breadth,the steel flow gains kinetic energy that is transferred to the bulk flow inside the mould generating a slight increment on turbulent mixing.However,coupling the tundish to the model,it was observed that the vortexes and short circuit phenomena affect considerably the steel flow patterns stability in the mould,since the jets oscillations increased.From these results,it can be conclude that the ill flow phenomena present in the tundish have a pronounced effect on the mould flow dynamics stability; for this is imperative to develop full models to simulate the steel transfer operations.
mathematical simulation coupling tundish to mould vsortex short circuit jet oscillations
José de Jesús BARRETO Saúl GARC(I)A-HERN(A)NDEZ Rafael GALLEGOS-LE(O)N
Professor,TecNM-Instituto Tecnológico de Morelia,Metallurgy Graduate Center,Morelia,Mich.,México Graduate Student,TecNM-Instituto Tecnológico de Morelia,Metallurgy Graduate Center,Morelia,Mich.,Méx
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
387-390
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）