Assigning an Impedance Boundary for the 2D Eddy Current Solver
This boundary condition is used to simulate the effect of induced currents in a conductor without explicitly computing them. Since the conductor must be excluded in the model (saving time needed to mesh and solve for currents), assign the impedance boundary condition to an outside edge of the problem region or to an excluded object. Exclude the object from the problem region and make the object a perfect conductor in the Material Manager.
To define an impedance boundary:
- Select the section of the geometry on which you want to apply the boundary condition (typically an edge).
- Click Maxwell 2D > Boundaries > Assign > Impedance.
The Impedance Boundary dialog box appears.
- Enter a name for the boundary in the Name box, or accept the default.
- Enter the conductivity (in inverse ohm-meters) in the Conductivity field.
- Enter the conductor's relative permeability in the Permeability field.
- Optionally, click Use Defaults to revert to the default values in the dialog box.
- Click OK to assign the boundary to the selected object.