Adaptive Mesh Refinement (Eigenmode)

Simulation: Solver Start Simulation [Adaptive mesh refinement, Properties...]

The mesh adaptation properties dialog box allows you to change the parameters used for the three-dimensional adaptive mesh refinement. Please note that the adaptive mesh refinement is only active when the corresponding button is checked in the Eigenmode Solver Parameters dialog box.

The adaptive mesh refinement is an automatic scheme to create a mesh better suited for the given problem. With the refined mesh a new calculation pass will be started. Here, the initial mesh is automatically generated by the expert system and is used for the first pass calculation. Afterwards, the adaptive mesh refinement improves the mesh up to a given accuracy of the eigenmode frequency variation. This accuracy is given by the Accuracy setting in the Eigenmode Solver Parameters dialog box. A setting of 0.01 means that the mesh adaptation stops if the maximum variation of the frequencies between two subsequent passes is below this limit. This check is performed for the desired number of eigenmodes.

The mesh refinement strategy successively changes the settings of the mesh expert system such that finally an appropriate mesh is obtained that can be used afterwards for further parameter studies without activating the adaptive meshing again.

Maximum frequency variation

The convergence error (Delta F) is determined as the maximum variation of the eigenmode frequencies between two subsequent passes.

Minimum number of passes

This is the minimum number of passes that will be performed, even if the eigenmode frequencies do not change significantly.

Maximum number of passes

This setting determines the maximum number of passes to be performed for the mesh adaptation, even if the eigenmode frequencies have not sufficiently converged. This setting is useful to limit the total calculation time to reasonable amounts.

Mesh increment

This parameter determines the changing of the mesh expert system by increasing the settings of Lines per wavelength and Lower mesh limit in the Mesh Properties dialog box.

Number of modes to check

Determines the number of eigenmodes used for the frequency converge check.

OK

Accepts the changes and closes the dialog.

Cancel

Closes this dialog box without performing any further action.

Help

Shows this help text.

See also

Eigenmode Solver Parameters




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