Relevance of Low-Rm MHD for Surface Viscosimetry of Liquid Metals

9th International Symposium on Electromagnetic Processing of Materials

材料科学;物理学

Patouillet, K.^1,2 ; Davoust, L.^1 ; Doche, O.^1 ; Ebrahimian, V.^2

SIMaP/EPM, 1340 rue de la piscine, St. Martin d'Hères

38402, France^1

Montupet, Techcenter 3 rue de Nogent, Laigneville

60290, France^2

关键词: Capillary length;    Metal-covered;    Non-planar interfaces;    Shallow channels;    Static magnetic fields;    Surface rheology;    Surface viscosity;    Viscosimetry;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/424/1/012043/pdf
DOI  :  10.1088/1757-899X/424/1/012043

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper presents a theoretical background which justifies the benefits of MHD using a magnetic field for surface viscosimetry of liquid/melted metals. The system considered is based on an annular shallow-channel layout filled with a melted metal covered by an oxide layer, and pervaded by a uniform static magnetic field. The latter permits to monitor the coupling between surface rheology and a supporting flow due to the well-known 2-D tendency of low-Rm magnetohydrodynamics. The impact of a non-planar interface and/or a non-uniformly oxidized interface can be investigated and the surface viscosity better identified.