Changes

In [[EM.Cube]]'s other modules, material types are specified categorized under the "Physical Structure" section of the navigation tree, and sources are organized under a separate "Sources" section. In those modules, the physical structure and its various material types typically represent all the CAD geometric objects you draw in your projectworkspace typically represent material bodies. Sources are virtual entities that might All of [[EM.Cube]] modules except for EM.Ferma require at least one excitation source to be associated with certain physical objects and provide selected from the excitation "Sources" section of your boundary value problemthe navigation tree before you can run a simulation.

In EM.Ferma, materials and sources are all lumped together and listed under the "Physical Structure" section of the navigation tree. In other words, there is no separate "Sources" section. For example, you can define default zero-potential perfect electric conductors (PEC) in your project to model metal objects. You can also define fixed-potential PEC objects with a nonzero voltage, which can effectively act as a voltage source for your boundary value problem. In this case, you will solve the Lapalce equation subject to the specified nonzero potential boundary values. Both types of PEC objects are defined from the same PEC node of the navigation tree by assigning different voltage values. Charge and current sources are also defined as CAD geometric objects, and you have to draw them in the project workspace just like other material objects.