Connected Boundaries
The Connected Boundaries subnode is available from the context menu (right-click the Geometry Analysis parent node) or from the Physics toolbar, Attributes menu. It can be used to mark two or more boundaries as being electrically connected for the purpose of the Coil Geometry Analysis preprocessing step.
The vector field computed in the Coil Geometry Analysis step (which corresponds to the current flow or the wire direction, according to the Conductor model selected) will have zero total flux into the selected boundaries. For example, if two nonconnected boundaries are selected, the feature will enforce the condition that the current entering one boundary must be equal to the current leaving the other boundary.
The feature models an electrical connection between the selected boundaries, and can therefore be used for coils constituted of multiple series-connected domains.
The Connected Boundaries functionality enforces current continuity as part of the Coil Geometry Analysis that computes the normalized DC current density. For Frequency Domain and Time Dependent studies, the induced current density is not subject to any restrictions by this functionality. Instead, it is recommended to set up the model with one coil per wire segment and enforce current continuity by connecting to The Electrical Circuit Interface. An alternative for Frequency Domain studies is to use The Magnetic and Electric Fields Interface and assign connected boundaries to the same Floating Potential subfeature of Magnetic Insulation.