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《Iron & Steel》 2010-01
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Effect of Bottom Structure of Submerged Entry Nozzle on Flow Field and Temperature Field in Continuous Casting Mold

WANG Cui-na,WEN Liang-ying,CHEN Deng-fu,ZHANG Da-jiang,PENG Zheng,JIN Xing(College of Materials Science and Engineering,Chongqing University,Chongqing 400030,China)  
Based on the structure parameters of mold and submerged entry nozzle,i.e SEN,for slab continuous casting in some steel plant,a 3-D numerical model describing the flow of liquid steel in mold was carried out.Commercial software FLUENT was used to simulate coupling flow field and temperature field of the molten steel.The effects of bottom structure of SEN on the flow field and temperature field of molten steel were analyzed and compared,moreover,the flow field results were validated by the water model.The research results indicate that near the outlet of convex SEN,the molten steel velocity is relatively high and the impact depth is deep,which enable high temperature region to shift down and go against the growth of solidified shell,the free surface velocity and temperature of flat bottom SEN is relatively high,which is beneficial for mold flux melting but can lead to naked molten steel,the free surface velocity and temperature of concave SEN velocity is relatively low,which is beneficial for the liquid level stabilizing.These research results can be used for the design of SEN as reference.
【CateGory Index】: TF777.1
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