连铸结晶器内瞬态流动大涡模拟在冶金流体力学课堂教学中的应用

Application of Large Eddy Simulation of Transient Flow of Continuous Casting Mold in the Metallurgical Engineering Teaching

冶金流体力学是冶金工程专业本科生一门重要的专业基础课,而连铸结晶器内流动过程是冶金过程流体力学教学中的重点。为了使同学理解连铸过程结晶器内多相传输过程,根据相似比设计结晶器水模型实验装置,通过耦合大涡模型和多相模型研究结晶器内瞬态流动和卷渣过程“渣眼”变化,定量化分析卷渣过程“渣眼”区域。通过实验和数值模拟提高课堂教学效率,增强学习主动性,可实现课堂教学内容形象化、趣味性。提出实验过程、理论知识及软件应用案例相结合,有助于学生加深冶金工艺和技术的了解,满足当前课程学习的需要。

Metallurgical fluid mechanics is an important professional basic course for undergraduates in metallurgical engineering.The behavior of molten steel in continuous casting mold plays a critical role for the metallurgical fluid mechanics teaching.To make students better understand the multi-phase transmission process in the continuous casting process,the water model devices were designed according to the similarity ratio,and the transient flow and the“slag eye”zones were simulated in the mold through large eddy model and multiphase model.The“slag eye”area was also quantitatively studied.Through the experimental teaching and numerical simulation,the efficiency of classroom teaching was improved,and the contents thereof were visualized and interesting.This work proposes a combination of the experimental process,theoretical knowledge and software application cases to help deepen the understanding of metallurgical processes and corresponding technologies,to meet the needs of current courses.