== Simulating the Patch Antenna on the Vehicle's Hood ==
Next, we move the patch antenna onto the front hood of the Golf model close to the front windshield as shown in the figure below.
<table>
</table>
By default, [[EM.Tempo]]'s mesh generator tries to place grid points at Th figure below shows the corners details 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 Yee mesh cell size toward around the "Absolute Minimum Grid Spacing", and would result in a much denser mesh than is requirednew location of the patch antenna. Since Due to the Golf model has more than 2000 distinct graphic objects, we will turn off some curvature of these adaptive mesh options. A mesh density the surface of 18 cells per effective wavelength is chosen for most parts in this structure with area, the absolute minimum generated mesh has denser grid spacing parameter set equal to 0lines.75mm. The figures below show This increases the Yee mesh total number of the whole vehicle structure as well as the portion of the roof in the proximity of the installed patch antenna. The overall mesh involves cells to more than <b><u>220 230 million</u></b> cells. Simulation Information: Mesh size: 230 million cells Farfield Resolution: 2.5 degrees Simulation Time: 5 hours, 25 minutes Typical Performance : 320 MCells/s Power Threshold: -40 dB Thread Factor: 8
<table>
<tr>
<td>
[[Image:Hood mount mesh detail.png|thumb|left|640px| The details of the Yee mesh of the vehicle structure generated by EM.Tempoaround the location of the patch antenna on the hood.]]
</td>
</tr>
</table>
The FDTD simulation of the vehicle structure with its new antenna location is performed on the same computing platform using Amazon Web Services (AWS). The total computation time in this case increased to 325 minutes.
