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I tried to plot the default clormaps provided by GMSH.

The following are some of the vector identities that are useful for electromagnetic problems.

Consequent pole motors typically have magnets followed by an iron part instead of another magnet.

This page talks about the Parameterized Inner Rotating BLDC type Motor with Surface Mounted Permanent Magnets

This page talks about the Parameterized Outer Rotating BLDC type Motor with Surface Mounted Permanent Magnets

Rectangular magnet geometry can be generated with rlib.

The eccentricity of the stator-rotor assembly can be generated by rlib.

The rlib can create very fine details in the geometry including individual wire placement in the motor slots.

Magnet overhang is the excess magnet length beyond the stator stack.

Tooth stem angle defines the taper of the stator teeth.