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Numerical Calculations on Inclusion Removal from Liquid Metals Under Strong Magnetic Fields

By Zhi Sun, Muxing Guo, Jef Vleugels, Omer Van der Biest, and Bart Blanpain
Progress In Electromagnetics Research, Vol. 98, 359-373, 2009


A numerical method is developed to calculate/simulate the separation of non-metallic inclusions from an aluminum melt by using a strong magnetic field (e.g., 10 Tesla) with high gradient generated via a superconducting magnet. The cases with and without imposed DC current on liquid aluminum in a cylindrical channel are discussed and compared. The migrating velocities of the non-metallic inclusions in an aluminum melt are calculated through force analysis and Navier-Stokes equations. In addition, the trajectories and removal efficiencies of the inclusions are evaluated. It is found that particle trajectories are influenced by the imposed flow rate and inclusion particle size. In addition, the removal efficiency is improved significantly, especially for small inclusions, e.g., <10 μm, by an imposed DC current on liquid aluminum in the high gradient area of a magnetic field.


Zhi Sun, Muxing Guo, Jef Vleugels, Omer Van der Biest, and Bart Blanpain, "Numerical Calculations on Inclusion Removal from Liquid Metals Under Strong Magnetic Fields," Progress In Electromagnetics Research, Vol. 98, 359-373, 2009.


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