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9.A. Basic Definitions
This section contains an overview of basic grid concepts.
While not necessary, it is recommended that users read through this section once to better understand how each
simulation program utilizes a grid.
The RSoft CAD uses an intelligent grid generation algorithm to produce a simulation grid based on the structure(s)
defined in the CAD environment, as well as a variety of grid options described in detail later in this chapter. The grid
generation algorithm automatically calculates a uniform or non-uniform grid best suited for the defined structure. The
grid is composed of rectangular shaped cells, or elements, of varying sizes, which cover the entire computational
domain, including any PML. Additionally, FemSIM supports a hybrid triangular and rectangular grid which is described
in more detail in the FemSIM manual.
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