30t钢包偏心单吹流场的数值模拟  

Numerical Simulation of Flow Field of 30 t Ladle Eccentric Single Blow

作　　者：刘继彬 LIU Jibin(Science and Technology Quality Center of Shandong Iron and Steel Group Rizhao Co.Ltd.,Rizhao 276800,China)

机构地区：[1]山东钢铁集团日照有限公司科技质量中心,山东日照276800

出　　处：《甘肃冶金》2023年第4期38-41,共4页Gansu Metallurgy

摘　　要：利用连续性方程、动量方程、Navier-Stokes方程、欧拉方程和k-ε双方程,运用Fluent软件的Simple算法,气液两相区采用欧拉两相流模型进行稳态下的钢包流场计算,得到了不同喷吹量及偏心位置不同时单孔吹气时,钢包内的流场三维分布图。首先通过偏心单吹死区比例的计算和流场的变化规律,确定最优单吹方案为包底0.55R处、气量为60 NL/min,然后对最优偏心单孔进行不同吹气量的流场数值模拟计算,得出钢包纵截面的流场分布图,分析发现吹气量的增加仅让钢包内钢液流动的速度提高了,但钢液的流动形态并未改变,大约在钢包的4/5高度处形成涡心,涡流运动十分明显。Using the continuity equation,momentum equation,Navier-Stokes equation,Euler equation and k-ε equations,using Fluent software Simple algorithm,in the gas-liquid two-phase zone,Euler two-phase flow model is used to calculate the ladle flow field under steady state,and the three-dimensional distribution diagram of the ladle flow field is obtained when the injection volume and eccentricity are different and the single hole blowing is different.Firstly,by calculating the proportion of eccentric single blowing dead zone and the changing law of flow field,the optimal single blowing scheme was determined to be 0.55R at the bottom of the package and the air volume was 60 NL/min.Then,the flow field numerical simulation of the optimal eccentric single hole with different air volume was carried out.The flow field distribution diagram of the longitudinal section of the ladle is obtained.The analysis shows that the increase of air volume only increases the flow velocity of the molten steel in the ladle,but the flow pattern of the molten steel does not change.The vortex center is formed at about 4/5 height of the ladle,and the eddy motion is very obvious.

关 键 词：底吹氩 30t钢包 偏心单吹 流场 数值模拟 

分 类 号：TF701[冶金工程—钢铁冶金]