Flow behaviors driven by a rotating spiral permanent magnetic field

X.D. Wang (1) , Biao Wang (2) , X.Z. Na (2) , J Etay (3) , Y Fautrelle (3)

1 UCAS - University of Chinese Academy of Sciences [Beijing]
2 Central Iron and Steel Research Institute
3 SIMaP - Science et Ingénierie des Matériaux et Procédés

A rotating spiral magnetic field, constructed by a series of permanent magnets, is presented in this study, which is used to drive liquid metal flow. The rotation of such magnetic stirrer can then exert spatial- and tempo- electromagnetic force and drive three dimensional turbulent flow within the liquid metal bulk. Its velocity field was measured via the ultrasonic Doppler velocimetry. Two typical toroidal vortices flow patterns: the secondary flow and the globally axial flow in the meridian plane have been validated, which depends on the several structural and operating parameters, i.e., radius of the liquid metal bulk. The critical transition conditions between these two flow patterns have been discussed according to the experimental results.

Mots clés: magnetic field; electromagnetic stirring; permanent magnet; liquid metal; flow pattern; velocity field

Domaines: Sciences de l'ingénieur [physics]

X.D. Wang, Biao Wang, X.Z. Na, J Etay, Y Fautrelle. Flow behaviors driven by a rotating spiral permanent magnetic field. 8th International Conference on Electromagnetic Processing of Materials, Oct 2015, Cannes, France. ⟨hal-01334611⟩