COMSOL 6.4 - FreeQuad

model.component(<ctag>).mesh(<tag>).create(<ftag>,"FreeQuad");

model.component(<ctag>).mesh(<tag>).feature(<ftag>).selection();

model.component(<ctag>).mesh(<tag>).feature(<ftag>).set(property,<value>);

model.component(<ctag>).mesh(<tag>).feature(<ftag>).getType(property);

model.component(<ctag>).mesh(<tag>).feature(<ftag>).create(<ftag1>,ftype);

Use model.component(<ctag>).mesh(<tag>).create(<ftag>,"FreeQuad") to create an unstructured quadrilateral mesh.

Use model.component(<ctag>).mesh(<tag>).feature(<ftag>).selection() to specify the domain (boundary in 3D) selection. If you do not specify any selection the feature creates a mesh on the remaining geometric entities in 2D. In 3D, the default selection is empty.

Use model.component(<ctag>).mesh(<tag>).feature(<ftag>).create(<ftag1>,ftype) to add attribute features.

The following properties are available:

Table 4-57: Available Properties for FreeQuad.
Property	Value	Default	Description
defectremoval	double	1.0	Relative size factor for identification local defects. Only available for imported meshes in 3D when method is quad or any of the legacy versions.
method	quaddominant \| quad \| legacy52 \| legacy52a \| legacy54	quaddominant	The quad meshing algorithm to use.
simplifymesh	on \| off	on	Boolean specifying if the original mesh should be simplified. Only available for imported meshes in 3D when method is quad or any of the legacy versions.
simplifytol	double	0.01	Relative simplification tolerance. Only available for imported meshes in 3D when method is quad or any of the legacy versions.
smoothcontrol	auto \| on \| off	auto	Specifies if the operation smooths the mesh across removed control entities. Only available for meshes conforming with geometry.
smoothmaxiter	integer	4	Specifies the number of smoothing iterations. Used if smoothcontrol is on.
smoothmaxdepth	integer	4	Specifies the maximum element smoothing depth. Used if smoothcontrol is on.
xscale	double	1	Scale geometry in x direction before meshing.
yscale	double	1	Scale geometry in y direction before meshing.
zscale	double	1	Scale geometry in z direction before meshing.

Table 4-57: Available Properties for FreeQuad.

Relative size factor for identification local defects. Only available for imported meshes in 3D when method is quad or any of the legacy versions.

method

quaddominant | quad | legacy52 | legacy52a | legacy54

quaddominant

The quad meshing algorithm to use.

simplifymesh

on | off

Boolean specifying if the original mesh should be simplified. Only available for imported meshes in 3D when method is quad or any of the legacy versions.

simplifytol

double

0.01

Relative simplification tolerance. Only available for imported meshes in 3D when method is quad or any of the legacy versions.

smoothcontrol

auto | on | off

auto

Specifies if the operation smooths the mesh across removed control entities. Only available for meshes conforming with geometry.

smoothmaxiter

integer

Specifies the number of smoothing iterations. Used if smoothcontrol is on.

smoothmaxdepth

integer

Specifies the maximum element smoothing depth. Used if smoothcontrol is on.

xscale

double

Scale geometry in x direction before meshing.

yscale

double

Scale geometry in y direction before meshing.

zscale

double

Scale geometry in z direction before meshing.

See the FreeTet feature for more information on the properties.

The following attribute features are used:

Table 4-58: Attribute Features for FreeQuad.
Feature	Remarks
CornerRefinement	Used when generating mesh on faces. Only available when generating mesh for a geometry,
Distribution	Used when defined on edges.
Size	All properties are used.
SizeExpression	All properties are used. Only available when generating mesh for a geometry.

Table 4-58: Attribute Features for FreeQuad.

Feature

Remarks

CornerRefinement

Used when generating mesh on faces. Only available when generating mesh for a geometry,

Distribution

Used when defined on edges.

Size

All properties are used.

SizeExpression

All properties are used. Only available when generating mesh for a geometry.

For imported meshes, there is a default size attribute under the FreeQuad feature with the tag size. You can access it using model.component(<ctag>).mesh(<tag>).feature(<ftag>).feature("size").