Adaptive Hexahedral Mesh Refinement (Frequency Domain)
Solver  Start Simulation Adaptive mesh refinement, Properties
The adaptive mesh refinement 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 frequency domain 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.
For the hexahedral
mesh, the initial mesh is automatically generated by the expert
system and is used for the calculation in the first pass. Afterwards,
the adaptive mesh refinement improves the mesh until the S-parameter convergence
criterion is met. For a given mesh, the linear equation system solver
accuracy setting
in the frequency
domain solver parameters dialog box influences the S-parameter
accuracy of a single pass as well as the broadband
frequency sweep threshold, if active. Please note that these accuracy
settings will control the S-parameter accuracy and simulation time of
a single pass.
The refinement strategy is expert
system based and successively changes the settings of the mesh
expert system, so that finally an appropriate mesh is obtained, which
can be used afterwards for further parameter studies without activating
the adaptive meshing again.
Number of passes frame
Minimum: This
is the minimum number of passes that will be performed, even if the S-parameters
do not change significantly.
Maximum:
This setting determines the maximum number of passes to be performed for
the mesh adaptation, even if the S-parameters have not sufficiently converged.
This setting is useful to limit the total calculation time to reasonable
amounts. Because the S-parameter convergence is determined as the maximum
error, a small shift in a pole location may result in a strong change
of the S-parameters at the pole’s frequency, especially in strongly
resonant structures.
Convergence criteria frame
Maximum Delta S:
The S-parameter error (Delta S)
is determined as the maximal deviation of the absolute value of the complex
difference of the S-parameters between two subsequent passes.
Special refinement
settings frame
Lines per wavelength increment: The
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. This setting applies to the expert
system based adaptive hexahedral mesh refinement only.
OK
Accepts the
changes and closes the dialog.
Defaults
Resets all dialog
parameters to the their default settings.
Cancel
Closes this
dialog box without performing any further action.
Help
Shows this help
text.
See also
Frequency
Domain Solver Parameters
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