*Physical Structure
*Computational Domain
*Discretization
*Sources
*Observables
*DiscretizationThe above attributes are what you normally need to define and specify before you run a computer simulation of a physical problem. First, you have to define the physical structure to be analyzed within a well-defined computational domain. The physical structure and possibly the computational domain need to be discretized using some kind of mesh generator. Next, you have to define a source for exciting your physical structure. Finally, you need to specify appropriate simulation observables to generate data that characterize the behavior of your physical structure. Now you can run the simulation engine, i.e., one of [[EM.Cube]]'s several electromagnetic solvers.
The specific contents of each attribute may vary from module to module depending on the underlying physics. For example, the geometric objects listed under your project's physical structure have different sets of properties in each module. Some source types like plane waves and Hertzian short dipoles or some observable types like field sensors, far-field radiation patterns and radar cross section (RCS) have identical definitions in all computational modules. Of [[EM.Cube]]'s computational modules, [[EM.Tempo]] serves as a general-purpose electromagnetic simulator that can handle most types of modeling problems involving arbitrary geometries and complex material variations in both time and frequency domains.
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=== Navigation Tree ===
The Navigation Tree provides all the details of an entire [[EM.Cube]] project. These include the CAD objects and geometric models, material assignments, computational domain and boundary conditions, mesh structureparameters, source information, observable definitions, etc. Besides the menu bar and toolbars, the navigation tree serves as another place from which you can modify most items in your project. Similar to the toolbars, you can undock, move around or hide the module bar and navigation tree.
The contents of the navigation tree vary depending on the selected module. In [[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]], the navigation tree features two main sections: Geometrical Construction and Data Visualization. The "Geometrical Construction" section holds your geometric objects, while the "Data Visualization" section is used for generation of 3D data visualizations to be displayed in the project workspace. In other modules, the navigation tree typically features five distinct sections: