有色金属科学与工程Issue(4)：37-43,7.DOI:10.13264/j.cnki.ysjskx.2014.04.008
150 t钢包自由表面旋涡的数值模拟与湍流模型的选择
Numerical simulation of free surface vortex in 150 t ladle and turbulent model choice
摘要
Abstract
During the unsteady teeming, it is easy to form vortex in ladle which leads to a large amount of slag and air entrapment resulting in deteriorating the quality of steel. To research the formation of vortex, the numerical simulation of free surface vortex on teeming process in ladle using k-ε and RNG k-ε turbulent models are carried out with the commercial software of ANSYS CFX. The process of free surface vortex, which is from rotation of free surface to vortex through the nozzle, is numerically simulated. The calculation results of two kind of turbulent models show no difference between the two of the evolution process of vortex and critical heights. The two velocity profiles are consistent with the relevant literature, but RNG k-ε demonstrates the shear flow of vortex more authentically. By comparing the two tangential velocity distributions with Burgers vortex model, it is found that RNG k-εcalculation result is much better consistent with theoretical model than k-εmodel. As a consequence, RNG k-ε turbulent model is better in calculation of free surface vortex.关键词
钢包/自由表面旋涡/数值模拟/湍流模型Key words
ladle/free surface vortex/numerical simulation/turbulent model分类
矿业与冶金引用本文复制引用
苌真真,张炯明,王顺玺,刘义,王博..150 t钢包自由表面旋涡的数值模拟与湍流模型的选择[J].有色金属科学与工程,2014,(4):37-43,7.基金项目
国家自然科学基金资助项目（51174024）；国家自然科学基金联合项目 （）
