A MICHELLE simulation requires at minimum a 2D or 3D geometry (depending on the solver chosen) together with appropriate attributes (i.e. materials, excitations, and boundary conditions). There should be no isolated geometry.
2D planar models should consist of one or more planar solids defined on the XY plane.
2D axisymmetric models should consist of one or more planar solids defined on the XY or ZX planes. For more information, see “Coordinate System”.
3D models may contain only 3D solids.