─ 2.3. Meshing Parameters
For this example the number of processors that has been set to 4, using 8 divisions per wavelength for planar and curved surfaces.
The most interesting parameters for this kind of problems are:
Divisions per wavelength. Increase them for obtaining denser meshes or reduce them for having fewer unknowns. 10 divisions are large enough for problems such as the considered one, and less than 5 divisions are not recommended as it may be detrimental to the Method of Moment's formulation accuracy.
Mesh Mode. Modify it for frequency sweeps, and then you can use a mesh generated for the same frequency for all the analysis frequencies, or generating multiple meshes that are assigned to the closest analysis frequency.
Advanced Settings – Multilevel Meshing Mode. Disable this option when the expected mesh density is not very large for the input surfaces, i.e., for meshing problems electrically small. For large cases where the input geometry is analogous to a mesh, such as periodical structures or FSS elements, the Multilevel Mode may be also disabled. It is recommended to use the multilevel mode when a large number of elements is expected in any of the input surfaces. You can also specify the frequency for generating the mesh in the first level, and this mesh will be remeshed up to the final desired frequency.
Use the command area –all to get information about the total area to be meshed. For this example, it is about 28.49 square meters, so we can estimate that about 126,521 elements must be generated (squares with a size of the wavelength divided by the specified divisions) to mesh the geometry. The estimated number of unknowns to be solved is about 253,042 (approximately the double of the mesh elements). According to the estimated resources, this example requires the Gold Version to be solved.
This example has been meshed in a personal computer by using 4 processors and requiring approximately 900 MB of RAM and 3 minutes to obtain a mesh of about 137,000 elements.