High Fidelity Numerical Investigations of Tailored Magnetic Fields for Defect Reduction in Continuous Casting of Steel

用于减少钢连铸缺陷的定制磁场的高保真数值研究

• 批准号: 1130882
• 负责人: Surya Vanka
• 金额: $ 30.1万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130882&HistoricalAwards=false
• 关键词: Fidelity; Numerical; Investigations; Tailored; Magnetic

This grant provides funding for the investigation of strategies to improve the quality of continuous-cast steel by applying tailored magnetic fields to alter fluid flow in the mold region to reduce the formation of defects. Magnetic fields apply additional forces to the steel flow which change the velocities that affect the transport of inclusions and level fluctuations that produce most of the defects in the current process. To accomplish this, high-fidelity computer models will be developed based on accurate modeling of the turbulence and its interactions with the magnetic fields. Advanced parallel computers based on graphics processing units will be used to reduce the computational times and increase the mesh resolution. The computer models developed will be applied to study flow fields in model and industrial geometries to characterize the effects of different magnetic field configurations. The ultimate objective is to obtain the most desirable configuration for performance and practical viability.If successful, the project will reduce defects and reduce the waste of energy, material and resources during the continuous-casting of steel, a process which is used to produce over 90 percent of the steel in the United States and globally. The principal investigators have close interactions with several steel producers through the Continuous Casting Consortium at the University of Illinois which provides an industry perspective as well as the means to implement results into practice. The research is expected to contribute to the fundamental understanding of turbulent flows in complex domains subjected to varied magnetic field configurations. The use of graphics processing units for fluid flow simulations has recently enabled significant advantages in speed and accuracy and this work will also be extended to clusters of multiple graphics processing units.

这笔赠款为研究改善连铸钢质量的战略提供了资金，方法是应用定制的磁场来改变结晶器区域内的流体流动，以减少缺陷的形成。磁场对钢流施加额外的力，从而改变影响夹杂物传输的速度和水平波动，后者在当前工艺中产生了大部分缺陷。为了实现这一点，将在对湍流及其与磁场相互作用的准确建模的基础上开发高保真计算机模型。将使用基于图形处理单元的先进并行计算机来减少计算时间，提高网格分辨率。开发的计算机模型将用于研究模型和工业几何中的流场，以表征不同磁场配置的影响。最终目标是获得最理想的性能和实用可行性配置。如果成功，该项目将减少钢材连铸过程中的缺陷和能源、材料和资源的浪费，美国和全球90%以上的钢材都使用连铸工艺。主要调查人员通过伊利诺伊大学的连铸联盟与几家钢铁生产商进行了密切的互动，该联盟提供了行业视角以及将结果落实到实践中的手段。这项研究将有助于从根本上理解复杂区域在不同磁场配置下的湍流流动。用于流体流动模拟的图形处理单元的使用最近在速度和精度方面实现了显著优势，并且这项工作也将扩展到多个图形处理单元的集群。