Delete

Delete elements from mesh.

Syntax

model.mesh(<tag>).create(<ftag>,"Delete");

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

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

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

Description

Use model.mesh(<tag>).create(<ftag>,"Delete") to delete elements from the mesh.

Use model.mesh(<tag>).feature(<ftag>).selection() to specify the geometric entity selection. Allowed selections are meshed geometric entities of any dimension and the entire geometry, which can be partially meshed.

The following properties are available:

Table 4-25: Available Properties

Property	Value	Default	Description
deladj	on | off	on	Specifies if elements belonging to adjacent domains of lower dimensions are deleted as well

Deleting elements corresponding to a specific domain, all elements on adjacent domains of higher dimension are deleted as well.

Compatibility

The following properties from the corresponding COMSOL Multiphysics 3.5a command, meshdel, have been removed:

Table 4-26: Removed Properties

Property	Reason
out	Output mesh provided by meshing sequence
edge	Defined by the selection
face	Defined by the selection
point	Defined by the selection
domain	Defined by the selection

Examples

Create a mesh of a 2D geometry with 3 domains. First, delete the elements belonging to Domain 3 only. Then delete the elements belonging to Domain 1 and all adjacent domains of lower dimensions that can be deleted. At last, delete the edge elements belonging to Edge 1. The elements belonging to the adjacent domain (Domain 2) are deleted as well.

Code for use with Java

Model model = ModelUtil.create("Model");

model.modelNode().create("mod1");

GeomSequence g = model.geom().create("geom1", 2);

MeshSequence m= model.mesh().create("mesh1", "geom1");

 

g.create("R1", "Rectangle");

g.create("C1", "Circle");

g.run();

 

m.create("ftri1", "FreeTri");

 

m.create("del1","Delete");

m.feature("del1").selection().geom(2).set(3);

m.feature("del1").set("deladj","off");

 

m.create("del2","Delete");

m.feature("del2").selection().geom(2).set(1);

m.feature("del2").set("deladj","on");

 

m.create("del3","Delete");

m.feature("del3").selection().geom(1).set(1);

 

m.run();

Code for use with MATLAB

model = ModelUtil.create('Model');

model.modelNode.create('mod1');

g = model.geom.create('geom1', 2);

m = model.mesh.create('mesh1', 'geom1');

 

g.create('R1', 'Rectangle');

g.create('C1', 'Circle');

g.run;

 

m.create('ftri1', 'FreeTri');

 

m.create('del1','Delete');

m.feature('del1').selection().geom(2).set(3);

m.feature('del1').set('deladj','off');

 

m.create('del2','Delete');

m.feature('del2').selection().geom(2).set(1);

m.feature('del2').set('deladj','on');

 

m.create('del3','Delete');

m.feature('del3').selection().geom(1).set(1);

 

m.run;

See Also

FreeTet, Map, Sweep