COMSOL 6.2 - Electromagnetic Heating

The node represents the electromagnetic losses, Qe (SI unit: W/m3), as a heat source in the heat transfer part of the model. It is given by

where the resistive losses are

and the magnetic losses are

In addition, it maps the electromagnetic surface losses as a heat source on the boundary (SI unit: W/m2) in the heat transfer part of the model.

The is the default multiphysics coupling feature name.

The is used primarily as a scope prefix for variables defined by the coupling node. Refer to such variables in expressions using the pattern <name>.<variable_name>. In order to distinguish between variables belonging to different coupling nodes or physics interfaces, the name string must be unique. Only letters, numbers, and underscores (_) are permitted in the field. The first character must be a letter.

The default (for the first multiphysics coupling feature in the model) is emh.

When nodes are added from the context menu, you can select (the default) from the list to choose specific domains to define the electromagnetic heat source or select as needed.

When is added as an effect of adding a interface, the selection is the same as for the participating interfaces.

Only domains that are active in the physics interfaces selected in the section can be selected.

When nodes are added from the context menu, you can select (the default) from the list to choose specific boundaries to define the electromagnetic boundary heat source or select as needed.

When is added as an effect of adding a interface, the selection is the same as the exterior and interior boundaries of the of the participating physics interfaces.

Only boundaries that are active in the physics interfaces selected in the section can be selected.

This section defines the physics involved in the multiphysics coupling. By default, the applicable physics interface is selected in the list to apply the to its physics interface to establish the coupling.

You can also select from either list to uncouple the node from a physics interface. If the physics interface is removed from the , for example is deleted, then the list defaults to as there is nothing to couple to.