Bandeau_HTS2020_v7.png

Modelling Pulsed Field Magnetization of Ring-Shaped Bulk Superconductors
Mike Beck  1@  , Mark Ainslie  2@  , Vito Cientanni  3@  
1 : Cambridge University Engineering Department
Cambridge University, Department of Engineering, Trumpington Street, Cambridge CB2 1PZ, United Kingdom. -  United Kingdom
2 : Cambridge University Engineering Department
Cambridge University, Department of Engineering, Trumpington Street, Cambridge CB2 1PZ, United Kingdom. -  United Kingdom
3 : Cambridge University Engineering Department
Cambridge University, Department of Engineering, Trumpington Street, Cambridge CB2 1PZ, United Kingdom. -  United Kingdom

The motion of flux into ring-shaped bulk high-temperature superconductors during pulsed-field magnetization (PFM) renders finite element modelling of the process more complicated than for disk-shaped bulks. The collision of two opposite-moving flux fronts within the bulk creates a thermal shock which, if poorly modelled, pollutes the numerical solution. In this work, the H-formulation is coupled with a thermal model to simulate the dynamics of ring-bulk PFM. The results are firstly validated against Brandt's analytical equations for a simple zero-field-cooled magnetization case, then extended to analyze PFM under more realistic material assumptions. The limitations, and ways to address these, of finite element modelling to predict the behavior of ring-shaped bulks during PFM are explored.



  • Poster
  • Video
Online user: 1