2-D Campbell’s model to estimate magnetization losses in a wire in the critical state

Magnetic vector potential

Current density distribution

This model was shared by E. Rizzo.

The model calculates the penetration of the magnetic field in the cross-section of a superconducting wire in the critical state subjected to a transverse magnetic field.

The figures above show the magnetic vector potential (left) and the current density distribution (right) in an elliptical superconductor subjected to a vertical uniform magnetic field.

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References

1. A. M. Campbell, 2007 Supercond. Sci. Technol. 20 292-295
2. Francesco Grilli and Enrico Rizzo 2020 Eur. J. Phys. 41 045203