Assigning a Current Density Excitation for a 2D Magnetostatic Solver

This command (depending upon solution type, either X-Y or R-Z) specifies the applicable components of the current density in the cross-section of an object. If the current density is a function of position, the value is entered in ampere/m2, even if you change the units in the problem.

To define the current density:

  1. Select the section of the geometry (i.e., the conductor) on which you want to apply the excitation (typically a 2D object).
  2. Click Maxwell 2D > Excitations > Assign > Current Density.
    The Current Density Excitation dialog box appears.
  3. Enter a name for the excitation in the Name box, or accept the default.
  4. In the Parameters section, specify the following options:
    1. Enter a value for the current density in the Value box. The value may be a single numeric quantity or a functional quantity.
    2. If a functional quantity is entered in the Value box, which depends on the applicable coordinates, select a Coordinate System from the drop-down menu.
  5. Optionally, click Use Defaults to revert to the default values in the dialog box.
  6. Click OK to assign the excitation to the selected object.