Example: Permanent Magnet

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This problem considers the magnetic field in a core containing a permanent magnet.

The system obeys the PDE

curl((curl(A)-P)/mu) + J = 0,

where A is the magnetic vector potential, P is the magnetization, J is the current density, and mu is the permeability.

The adapted grid (click to zoom)

The magnetic potential Az


The magnetic field strength

View the problem script