水口结构对连铸结晶器内钢水流动的影响  

THE EFFECT OF NOZZLE STRUCTURE ON MOLD FLOW IN CONTINUOUS CASTER

作　　者：李京社[1] 程爱民[1,2] 高雅巍[1] 吉传波[1] 孙丽媛[1] 

机构地区：[1]北京科技大学 [2]新疆金特钢铁股份有限公司

出　　处：《河南冶金》2012年第2期1-3,共3页Henan Metallurgy

摘　　要：采用雷诺平均(RANS)数学模拟方法,研究波浪形和山形水口底部结构对结晶器内钢水湍流现象及表面流速的影响。通过1∶1结晶器模型水模拟进行了验证,表明采用OA光纤测速仪对结晶器表面流速测量的结果和数值模拟结果吻合较好。研究表明波浪形水口可以抑制水口流出钢水的射流,改善结晶器内钢水流场,降低表面流速稳定液面,进而改善铸坯表面质量。This work applies Reynolds averaged Navier-stokes computational model to investigate the effect of different nozzle bottom on the turbulent flow in the mold cavity and top surface velocity during continuous casting of steel.The model was validated by comparing the impeller velocity measurement in the water model and computational result,the computational results agree well with the measurement.The waved bottom nozzle can suppress the jet flow exiting from the nozzle ports,improve the fluid flow in the mold and decrease the meniscus fluctuation,furthermore minimize the casting defect.

关 键 词：连铸 结晶器 RANS 数值模拟 水口结构 

分 类 号：TF777[冶金工程—钢铁冶金]