CST2013: Special Mesh Properties - Discretizer

Simulation: Mesh Global Properties [Specials...] Discretizer

Mesh type frame

Automatic: An expert system automatically chooses the best Perfect Boundary Approximation (PBA) method for optimal performance and accuracy. This is the recommended setting.

FPBA:  New fast PBA mesher with improved performance and robustness in particular for large imported models.

PBA: Hexahedral meshing with  most accurate PBA.

Staircase mesh: The classic hexahedral staircase meshing is extremely robust and recommended if the other mesh type methods fail due to unremovable errors of imported surface bodies or shapes.

Enhance FPBA accuracy: The accuracy of FPBA can be improved by activating this option. The mesher is then started in the robust FPBA mode using an even more accurate boundary approximation.

Parallelization frame

Parts of the matrix calculation process take advantage of running multiple sub-processes in parallel. The dropdown list in this frame allows to control the parallelization behavior.

Choose one of the following three options:

Maximum: Automatically uses the maximum possible number of parallel threads regarding the license and hardware configuration of your computer.

Use up to: Enter here the desired number of threads to use. The entered value will not exceed the maximum.

None: Disables the parallelization.

Please note: Parallelization works only in combination with FPBA mesh type.

PBA fill limit

This setting refers to a percentage of how much a mesh area is filled with PEC. Every mesh area that is filled with more than this percentage will be treated as fully filled.

The reason for this setting is that mesh areas with very small non PEC parts may cause instabilities in the simulation. But, for very few examples, the simulation may become instable for the default value of 99%. In these cases try to decrease this value to get a stable simulation.

Point accuracy enhancement

Defines the accuracy level for the internally used geometric data representation. Use the default level of 0% for a fast and accurate matrix setup. If you encounter problems during the meshing process, increase this level. An accuracy of 100% means using the highest possible accuracy of the build-in CAD kernel, but slows down the matrix generation.

Gap representation tolerance

If this check button is enabled then the accuracy of the internal representation of non-metal gaps is increased. This accuracy enhancement applies only to those locations in the mesh where the size of the mesh cell is large compared to the size of the gap.

A tolerance value might be specified to skip the accuracy enhancement for gaps that are smaller than a certain value. This tolerance value is given in spatial dimensions with respect to the globally defined units.

If gaps cannot be represented with a sufficient accuracy the respective mesh cells are marked with a purple frame within the mesh view.

Use singularity model for PEC and lossy metal edges

Activates the corner correction for PEC edges based on analytical models.

Convert geometry data after meshing

Prepare geometry data for accurate post processing at the end of the matrix setup.

Connectivity information

Use this option in order to generate information about the electrical connectivity of the model shapes.

Use TST cells

Activates Thin Sheet Technology (TST) cells.

Always exclude PEC regions

This check button offers the possibility to automatically exclude regions, which are completely filled with PEC, from the transient solver simulation. If large PEC regions exist, selecting this option may result in a significant speed-up of the simulation.

Defaults

Resets all settings to the default values.

OK

Accepts the changes and closes the dialog.

Close

Closes this dialog box without performing any further action.

Apply

Accepts the input without closing the dialog.

Help

Shows this help text.

See Also

Mesh View, Mesh Properties