Lorentz Force Particle Analyzer —Prototype experiments and numerical models

X.D. Wang (1) , A Thess (2) , R Moreau (3) , Y.Q. Tan (1) , Z Tao (1) , S.J. Dai (1)

1 UCAS - University of Chinese Academy of Sciences [Beijing]
2 Institute of Engineering Thermodynamics, Aerospace Center
3 SIMaP - Science et Ingénierie des Matériaux et Procédés

A new contactless technique to detect micron-sized insulating particles in the flow of an electrically conducting fluid is presented. A transverse magnetic field brakes the flow and tends to be itself entrained in the flow direction by a Lorentz force, which can be measured. The presence of particles suspended into the fluid results in changes of this Lorentz force acting on the magnet, whose pulses allow to count and size the particles. This technique may be severed as a method for high-temperature metallic melt cleanliness inspection.

Mots clés: Lorentz force; particles; permanent magnet; liquid metal cleanliness inspection

Domaines: Sciences de l'ingénieur [physics]

X.D. Wang, A Thess, R Moreau, Y.Q. Tan, Z Tao, et al.. Lorentz Force Particle Analyzer —Prototype experiments and numerical models. 8th International Conference on Electromagnetic Processing of Materials, Oct 2015, Cannes, France. ⟨hal-01334136⟩