Contactless inductive flow tomography: basic principles and first applications in the experimental modelling of continuous casting

International Symposium on Liquid Metal Processing & Casting 2015

材料科学;金属工艺学

Stefani, F.^1 ; Eckert, S.^1 ; Ratajczak, M.^1 ; Timmel, K.^1 ; Wondrak, T.^1

Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden

01328, Germany^1

关键词: Applied magnetic fields;    Continuous casting process;    Electromagnetic brakes;    Electromagnetic stirrers;    Experimental modelling;    Experimental simulations;    Inductive flow tomography;    Submerged entry nozzles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/143/1/012023/pdf
DOI  :  10.1088/1757-899X/143/1/012023

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Contactless inductive flow tomography (CIFT) aims at reconstructing the flow structure of a liquid metal from the magnetic fields measured at various positions outside the fluid body which are induced by the flow under the influence of one or multiple applied magnetic fields. We recap the basic mathematical principles of CIFT and the results of an experiment in which the propeller-driven three-dimensional flow in a cylindrical had been reconstructed. We also summarize the recent activities to utilize CIFT in various problems connected with the experimental simulation of the continuous casting process. These include flow reconstructions in single-phase and two-phase flow problems in the Mini-LIMMCAST model of slab-casting, studies of the specific effects of an electromagnetic stirrer attached to the Submerged Entry Nozzle (SEN), as well as first successful applications of CIFT on the background of a strong electromagnetic brake field. We conclude by discussing some remaining obstacles for the deployment of CIFT in a real caster.