Superconducting sphere - QuickField simulation example
This is a simulation example of the superconducting sphere in an external magnetic field. Example is prepared by Professor James R. Claycomb as a part of the webinar QuickField analysis for Superconductors.
How can the supercurrent on the superconductor surface be calculated?
Answer Typical applications Geometry
Given
Task Solution
Results
Engineering question
Model the superconducting sphere in a uniform external field and obtain the surface supercurrent density from the tangential magnetic field strength.
superconducting spherical shields, diamagnetic shielding bodies, superconducting screening elements
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Simulation problem
Problem Type
Axisymmetric problem of DC magnetics.
R = 10 cm
Calculate the supercurrent on the superconductor surface.
Uniform external magnetic field is defined by assigning a non-zero vector magnetic potential distribution on the simulation area boundary.
The superconductor could be modelled either by specifying very low value of magnetic permeability or by the boundary condition. Both cases are simulated and compared.
Tangential field strength component equals to the surface supercurrent density.
Superconducting sphere in the uniform magnetic field.
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