Mathematical Modelling of the Flow and Heat Transfer in High-Turbulence Roll Cooling (HTRC)

ArcelorMittal Dofasco是北美领先的钢铁制造商之一，与顶级汽车、能源、包装和建筑品牌合作，开发更轻、更强、更可持续的产品——从易拉罐到汽车。ArcelorMittal Dofasco成立于1912年，是汉密尔顿最大的私营企业**，拥有4,800多名员工，每年运送500万短吨高品质扁钢**。热轧是炼钢的关键工序之一。在这一过程中，热铁板在轧辊之间通过，以减小其尺寸，并获得厚度均匀的带钢。在这个过程中，轧辊必须连续冷却。由于热应力**和产品表面质量的退化，高轧辊温度会导致轧辊的早期磨损和破裂。如今，工厂正在努力提高产量。然而，**这导致更高的辊温度与传统的冷却系统。为了提高冷却效率，**CRM（比利时米塔尔Gent研究中心）和安赛乐米塔尔Gent开发了一种名为高湍流滚冷却（HTRC）的创新技术**。该系统显著改善了冷却效果。**然而，该系统的所有设计和运行参数尚未优化。**通过Engage项目，建立了HRTC的三维流动模型，研究了不同设计和操作参数（喷嘴配置、水流速率、间隔片厚度、辊筒直径等）对**湍流的影响。在这个Engage Plus项目中，传热将添加到上述模型中。在与工厂数据进行验证后，将进行全面的研究，以确定各种参数对HRTC性能的影响，以确定最佳条件，从而优化冷却并以更低的成本获得更好的产品质量。

ArcelorMittal Dofasco is one of North America's advanced steel manufacturers working with the top**automotive, energy, packaging, and construction brands to develop lighter, stronger, and more sustainable**products - from cans to cars. Founded in 1912, ArcelorMittal Dofasco is Hamilton's largest private sector**employer with more than 4,800 employees shipping 5 million short tons of high quality flat carbon steel**annually.**Hot rolling is one of the key steps of steel manufacturing. In this process, hot metal slabs pass between rolls to**decrease their size and to obtain a strip with uniform thickness. During this process, rolls have to be cooled**continuously. High roll temperatures result in early wear/tear and breakdown of rolls due to thermal stresses**and the degradation of product surface quality. Nowadays, mills are trying to increase throughput. However,**this results in higher roll temperatures with the conventional cooling system. To increase cooling efficiency,**CRM (Centre Recherche Métallurgique-Gent, Belgium) and ArcelorMittal Gent developed an innovative**technology called High Turbulence Roll Cooling (HTRC). This system significantly improved cooling.**However, all the design and operational parameters of this system are not yet optimized.**Via an Engage project, a 3D flow model of HRTC was developed, and the effects of different design and**operational parameters (nozzle configuration, water flow rate, spacer thickness, roll diameter, etc.) on**turbulence were investigated. In this Engage Plus project, the heat transfer will be added to the above model.**After validation with mill data, a comprehensive study will be carried out to determine the impact of various**parameters on the HRTC performance in order to identify the best conditions which will lead to optimized**cooling and better product quality at lower cost.