Lorentz Force Velocimetry using a bulk HTS magnet system

9th International Symposium on Electromagnetic Processing of Materials

材料科学;物理学

Vakaliuk, O.^1 ; Halbedel, B.^1

Technische Universität Ilmenau Institute of Materials Engineering, Department of Inorganic-Nonmetallic Materials Group of Materials Research in or with Magnetic Fields, Gustav-Kirchhoff-Straße 6, Ilmenau

D-98693, Germany^1

关键词: Bulk high temperature superconductors;    Flow rate measurements;    Glass melts;    Lorentz force velocimetry;    Trapped field magnet;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/424/1/012009/pdf
DOI  :  10.1088/1757-899X/424/1/012009

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Design of the Lorentz Force Flow-meter (LFF-meter) for weakly-conducting and slow-flowing fluids, e.g., glass melts, place stringent requirements on the magnetic field generation and force measurements. In the scope of the Research Training Group "Lorentz Force Velocimetry (LFV) and Lorentz Force Eddy Current Testing", a LFF-meter considers: first - a magnetic field source, where NdFeB permanents magnet system is replaced with a bulk high-temperature superconductors (HTS), which promise higher flux densities (> 1 T) and thus higher output force resolution; second - a high-precision force measurements, where electromagnetic force compensation weighing balance (EMFC) setup is replaced with torsion balance based system (TFMS), which claims an increase of the force resolution up to 1 nN. Furthermore, in order to raise the issue of the limiting total mass (which is always an issue for high-precision force measurements), the bulk HTS and TFMS are merged within the cryostat. This work discusses LFV experiments, calculations and numerical simulations, where a magnetic field is generated by the bulk HTS.