Magnetic Vector-Scalar Potential Coupling

The multiphysics node assures continuity of the magnetic flux density across boundaries between The Magnetic Fields Interface and The Magnetic Fields, No Currents, Boundary Elements Interface. The node is available from the menu in the toolbar or by right-clicking the node in , if both The Magnetic Fields Interface and The Magnetic Fields, No Currents, Boundary Elements Interface are available.


	The Magnetic Fields Interface can be set to solve for the Reduced field using the Background Magnetic Field setting. The Magnetic Fields, No Currents, Boundary Elements Interface does not have such a setting but it can be made to represent an open boundary for the reduced field by adding, in The Magnetic Fields Interface, a Magnetic Field feature with the background magnetic field on the boundary selection for the Magnetic Vector-Scalar Potential Coupling.


	When combining The Magnetic Fields, No Currents, Boundary Elements Interface with The Magnetic Fields Interface, the latter has to use Gauge Fixing for A-Field and a solved using Fully Coupled and a Direct solver, see the COMSOL Multiphysics Reference Manual for details on Fully Coupled and Direct.

Boundary Selection

Select or from the list. Make additional edits to the list of boundary entity numbers using the Selection toolbar buttons. When is selected from the list, the boundaries exterior to the Magnetic Fields interface that intersect the exterior boundaries to the Magnetic Fields, No Currents, Boundary Elements interface are available in the boundary entity number list.


	When using the symmetry options at the physics interface level as discussed in Symmetry, there will be no degrees of freedom on the symmetry planes. For such cases, please make sure that the coupling selection does not contain boundaries that intersect with the symmetry planes.

Coupled Interfaces

Select as and as .