Mesh Properties (Tetrahedral)
Mesh  Global Properties
Note:
The active mesh type refer merely to the mesh preview. A change of the
solver method will change the active mesh type.
Mesh density control frame
Steps
per wavelength: This value is connected to the wavelength of the
highest frequency
set for the simulation. It defines the minimum number of mesh cells that
are used for a distance equal to this wavelength.
This sets the spatial
sampling rate for the signals inside of your structure. This setting has
a strong influence on the quality of the results and on the calculation
time. Increasing this number leads to a higher accuracy, but unfortunately
also increases the total calculation time.
A good
compromise between calculation time and the achievable accuracy is the
default value of 4 for tetrahedral meshing.
Minimum number
of steps: This value controls the global relative mesh size and defines a lower bound for the number of
mesh cells independently of the wavelength. It specifies the minimum
number of mesh edges to be used for the diagonal of the model bounding
box. Consequently, the higher this value the finer the mesh.
Together with the possibility to set local mesh
sizes, see Local
Mesh Property (Tetrahedral), this is the most important quantity to
control the automatic tetrahedral mesh generator. Please mind that tetrahedral
meshes combined with first order elements need a higher resolution to
gain the same accuracy as when higher order elements are used.
Material based refinement
With this option the material-based refinement
can be switched on or off.
Mesh summary frame
The values shown in this frame are only for
information purposes. You can not edit them.
Min. edge length:
The length of the shortest mesh edge.
Max. edge length:
The length of the longest mesh edge.
Tetrahedrons:
The number of mesh cells.
Min. quality:
The minimum of all mesh cell quality values.
Max. quality:
The maximum of all mesh cell quality values.
Average quality:
The average of all mesh cell quality values.
Note:
The quality of a tetrahedron measures how good
its shape matches the shape of an ideal, equilateral tetrahedron. It is
defined by the expression
 ,
where rin
is the inradius of the tetrahedron and rcirc
the circumradius. The factor 3 is a scaling factor, such that the quality
is positive and less or equal to one. Low quality values indicate degenerated
mesh cells, which may have a negative impact on the convergence.
OK
Accepts the changes and closes the dialog. If
changes were made, the mesh will be updated.
Apply
Stores the current settings. The dialog box
open remains open.
Cancel
Closes this dialog box without performing any
further action.
Update
Updates the mesh representation.
Specials...
Leads to a special dialog box that allows you
control the automatic mesh generator.
Simplify model...
Use this button to globally reduce
the complexity of your model.
Help
Shows this help text.
See also
Mesh
View (Tetrahedral), Special
Mesh Properties
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