Given: Relative magnetic permeability of mu-metal μ = 10000,
External field B = 0.5 T.
Determine the shielding factor for axial and transverse field direction.
Solution: Two problems were simulated: axissymmetric (mu_metal_rz.pbm) for the axial magnetic field and plane-parallel (mu_metal_transverse.pbm) for the transverse magnetic field. Uniform external magnetic field was defined by assigning non-zero vector magnetic potential on the simulation area boundary.
Results Magnetic field strength distribution in case of the axial magnetic field
Magnetic field strength distribution in case of the transverse magnetic field