Current Flow (Eddy Current)

To compute the current flow, the eddy current field solver uses the following relationship:

where

• I is the current.
• J is the current density, given by



• A is the area over which the current flow is computed.
• In Cartesian (XY) models, the area is found by sweeping the current flow line you’ve drawn in the xy-plane into the z direction — forming a 3D surface. The current flow computed is the current per meter depth in the z-direction.
• In axisymmetric (RZ) models, the area is found by revolving the flux line you’ve drawn in the rz-plane 360 degrees around the z-axis, forming a 3D surface. The current flow computed is the total current that passes through this surface.

A separate current flow value is computed for each line you draw.