重力势能驱动旋流冶金反应器流动特性数值模拟  

Numerical Simulation on Flow Characteristics in Gravitational Potential Energy-driven Metallurgical Reactor

作　　者：刘中秋[1] 张刚刚[1] 王强[1] 王芳[1] 李宝宽[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《过程工程学报》2010年第S1期177-182,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50904014)

摘　　要：重力势能驱动的冶金反应器是一种仅利用钢液本身的重力势能作为动力驱动产生旋流,借用旋流的力量对钢液进行搅拌,无需外加动力和物质的炉外精炼设备.应用CFD软件Fluent对重力势能驱动的旋流冶金反应器进行三维数值模拟,并对几何模型的建立、网格生成技术、湍流模型、离散方法、欠松弛因子及边界条件等问题进行了探讨.模拟结果表明,该冶金反应器可以产生可观的旋流,在漏斗型反应器的壁面加不同形式的叶片会产生不同强度的旋流,在已知的3种叶片形式中,前弯型叶片产生的旋流效果最佳.数值模拟所获得的轴截面上的速度分布规律与水模型实验研究结果基本吻合,验证了数值模拟的可行性,同时也为进一步研究重力势能驱动旋流冶金反应器的结构优化和冶金性能预测提供参考.The metallurgical reactor driven by gravitational potential energy is molten steel secondary refining equipment.It only uses the gravity potential energy of molten steel as driving power to generate swirling,with the strength of swirling to stir molten steel and without external driving force and material.Numerical simulation on flow characteristics in such metallurgical reactor is made and the method of computational fluid dynamics(CFD) put forward.Study on geometric model,establishment of grid,turbulent model,equation discrete,relaxation factor and boundary conditions have been discussed.Simulation results show that the metallurgical reactor can produce substantial swirl,different types of vanes on the wall of the funnel reactor,which produce vortex,will produce different intensions of swirl.In the three known vanes,the front bending vanes reactor has produced the best swirling effect.The results of numerical calculation demonstrate the distribution rules of the vector field of velocity,which fit well to the experimental results of water model.It will be helpful to the structural optimization and metallurgical performance prediction for such reactor.

关 键 词：重力势能 旋流 冶金反应器 三维数值模拟 内部流场 

分 类 号：TF341[冶金工程—冶金机械及自动化]