</table>
== Computational Environment ==By default, [[EM.Tempo]]'s mesh generator tries to place grid points at the corners of each graphic object's bounding box, and also at any internal boundaries any object may have. For models with a large number of complex geometric objects, this could drive the typical mesh cell size toward the "Absolute Minimum Grid Spacing", and would result in a much denser mesh than is required. Since the Golf model has more than 2000 distinct graphic objects, we will turn off some of these adaptive mesh options. A mesh density of 18 cells per effective wavelength is chosen for this structure with the absolute minimum grid spacing parameter set equal to 0.75mm. The figures below show the Yee mesh of the overall vehicle structure as well as the portion of the roof in the proximity of the installed patch antenna. <table><tr><td>[[Image:Roof patch mesh.png|thumb|left|480px| The location of the patch antenna on the vehicle roof.]]</td></tr></table> <table><tr><td>[[Image:Roof mesh.png|thumb|left|480px| The location of the patch antenna on the vehicle roof.]]</td></tr></table>
The Mirage III CAD model has an approximate length of 15m, a wingspan of 8m, and an approximate height of 4.5m. Expressed in free-space wavelengths at 850 MHz, the approximate dimensions of the aircraft model are 42.5 λ<sub>0</sub> x 22.66 λ<sub>0</sub> x 12.75 λ<sub>0</sub>. Thus, for the purposes of [[EM.Tempo]], we need to solve a region of about 12,279 cubic wavelengths. For problems of this size, a very large CPU memory is needed, and a high-performance, multi-core CPU is desirable to reduce the simulation time.
[[Image:Roof mesh settings advanced.png|thumb|left|400px|]]
By default, [[EM.Tempo]]'s mesher tries to place grid points at the corners of each graphic object's bounding box, and also at any internal boundaries the object may have. For models with a large number of complex objects, this can drive the typical mesh cell size toward the Absolute Minimum Grid Spacing, and result in a much finer mesh than is required. Since the VW Golf model has around 2000 graphic objects, we will turn off these options.
[[Image:Roof patch.png|thumb|left|400px|]]