9.1     How to assure the proper mesh generation

The process of meshing consists of generating a set of FDTD cells describing the considered structure. As it has been mentioned in FDTD method in QuickWave Software half-cells form sublayers in XY plane (with one layer of the FDTD cells composed of two sub-layers). Each of the half-cells of conformal FDTD method must be a cuboid composed of one medium or a cuboid divided by a plane into two parts filled by different media. Meshing is done automatically by QW-Editor during the Export operation. QW-Simulator reads the meshing information coded in *.sh3 file and assigns to each of the cells proper electrical parameters (depending on the cell’s shape and media filling).

As it was mentioned the meshing is performed automatically by QW-Editor. However there are certain important rules to be obeyed while introducing the geometrical data. We need to provide to the mesher consistent information leading to the expected results of the meshing process. Here we would like to draw the user’s attention to several situations, which may cause meshing problems and thus should be avoided in projects. They first concern intersecting elements, multiple-filled cells, and meshing hazards along the Z-axis.