The Magnetic Field node adds a boundary condition for specifying the tangential component of the magnetic field at the boundary:
The Harmonic Perturbation subnode (it is of the exclusive type) is available from the context menu (right-click the parent node) or in the
Physics toolbar by clicking the
Attributes menu and selecting
Harmonic Perturbation. For more information see
Harmonic Perturbation — Exclusive and Contributing Nodes in the
COMSOL Multiphysics Reference Manual.
Enter the value or expression for the Magnetic Field H0 (SI unit: A/m) vector coordinates. The defaults are 0 A/m.
) and select Advanced Physics Options in the Show More Options dialog box.