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| Effect of Bottom Structure of Submerged Entry Nozzle on Flow Filed and Temperature Field in Continuous Casting Mold |
| 王翠娜 WANG Cui-Na WEN Liang-Ying WEN CHEN Deng-Fu CHEN ZHANG Da-Jiang ZHANG PENG Zheng PENG JIN Xing JIN |
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Abstract Based on the structure parameters of one steel plant mold and submerged entry nozzle (SEN) for slab continuous casting, 3-D numerical model which describes the flow and heat transfer of liquid steel in mold has been 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. These research results indicated that: near the outlet of convex SEN , the molten steel velocity is relative 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 relative high, which is beneficial for mold flux melting but can lead to the opening of slag layer; the free surface velocity and temperature of concave SEN velocity is relative low, which is beneficial for the liquid level stabilizing. These research results can be used for the design of SEN as reference.
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Received: 12 June 2009
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2010, Vol. 45 
