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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 gravitational potential-driven metallurgical reactor is a kind of external refining equipment that uses only the gravitational potential energy of the molten steel as a power drive to generate swirl, and uses the power of swirling to stir the molten steel without the use of external power and material.Application of CFD software Fluent The three-dimensional numerical simulation of the swirling metallurgical reactor driven by gravitational potential energy is carried out and the problems of the establishment of the geometric model, the grid generation technology, the turbulence model, the discrete method, the under-relaxation factor and the boundary conditions are discussed. The simulation results show that, The metallurgical reactor can produce a considerable swirl flow in the funnel-shaped reactor wall with different forms of vortex will produce different intensities of the swirling flow in the known three kinds of leaf form, before the curved curved leaf vortex effect The numerical simulation results agree well with the experimental results of water model and validate the feasibility of numerical simulation, as well as to further study the structure optimization and metallurgy of the swirling metallurgical reactor by gravitational potential energy Performance prediction for reference.