4.5 Article

Effects of electrically conductive walls on turbulent magnetohydrodynamic flow in a continuous casting mold

期刊

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.ijheatfluidflow.2022.108967

关键词

MHD; Magnetic field; Lorentz force; OpenFOAM; Electrically conducting walls; Dynamic LES; Continuous casting

资金

  1. European Union's Horizon 2020 research and innovation program TOMOCON (Smart Tomographic Sensors for Advanced Industrial Process Control) under the Marie Sklodowska-Curie grant [764902]

向作者/读者索取更多资源

In this study, numerical simulations were used to analyze the factors influencing turbulent liquid metal flow in a laboratory-scale continuous casting setup. The results showed that the finite electrical conductivity of the Hartmann walls significantly affected the flow and turbulence reorganization. These insights are important for the development of the new generation of laboratory and real-scale continuous casting setups.
In the present study, we have performed a series of numerical simulations of the turbulent liquid metal flow in a laboratory-scale setup of the continuous casting. The liquid metal flow was subjected to an external non-uniform magnetic field reproducing a realistic electromagnetic brake (EMBr) effect. The focus of this research was on the effects of the finite electrical conductivity of Hartmann walls on the flow and turbulence in the mold. To be able to simulate distributions of the electric potential and current in both the fluid and solid wall domains, we applied our recently developed and validated in-house conjugate MHD solver based on the open-source code OpenFOAM. The dynamic Large Eddy Simulation (LES) method was used to simulate the turbulent flow. The results obtained for the neutral (non-MHD) and MHD cases over a range of the imposed EMBr strengths - all for the perfectly electrically insulated walls - were compared with the available Ultrasound Doppler Velocimetry (UDV) mea-surements. A good agreement between simulations and experiments was obtained for all simulated cases. Next, we completed a series of simulations including a wide range of the finite electric conductivities (ranging from a weakly to perfectly conducting wall conditions) of the Hartmann walls for a fixed value of the imposed EMBr. The obtained results demonstrated a significant influence of the electric wall conductivities on the flow and turbulence reorganization. It is expected that here provided insights can be applicable for the new generation of the laboratory-and real-scale continuous casting setups.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据