BndLayer
Create a boundary layer mesh. Supported for domains in 2D and 3D as well as for faces in 3D. For imported meshes, the domains must contain a mesh. Use FreeTet to fill unmeshed domains before creating a boundary layer mesh.
Syntax
model.component(<ctag>).mesh(<tag>).create(<ftag>,"BndLayer");
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>,"BndLayerProp");
Description
Use model.component(<ctag>).mesh(<tag>).create(<ftag>,"BndLayer") to create a boundary layer mesh in domains in 2D and 3D, and on faces in 3D.
Use model.component(<ctag>).mesh(<tag>).feature(<ftag>).selection() to specify the domain or boundary selection. If you do not specify the selection, the feature operates on all domains or on all boundaries depending on the selection dimension of the corresponding BndLayerProp attribute.
Use model.component(<ctag>).mesh(<tag>).feature(<ftag>).create(<ftag1>,"BndLayerProp") to add a BndLayerProp attribute feature defining the locations and properties of the boundary layers.
The feature reads properties from the BndLayerProp attribute feature.
The following properties are available:
Table 4-15: Available Properties for BndLayer.
Property
Value
Default
Description
sharpcorners
none | split | trim
split
Specifies the handling of sharp corners in 2D and sharp edges in 3D.
layerdec
integer
2
Maximum difference in number of boundary layers between neighboring points on boundary layer boundaries. For all values of sharpcorners.
method
latest | legacy60 | legacy61
latest
Specify the boundary layer method to use.
smoothtransition
on | off
on
Specifies if the operation smooths the transition to interior mesh.
splitangle
double
240[deg]
Minimum angle between boundary layer boundaries to introduce a boundary layer split. When sharpcorners is split.
splitdivangle
double
100[deg]
Maximum angle per split. When sharpcorners is split.
trimmaxangle
double
50[deg]
Maximum angle for boundary layer trimming in narrow corners. For all values of sharpcorners.
trimminangle
double
240[deg]
Minimum angle between boundary layer boundaries for boundary layer trimming. When sharpcorners is trim.
smoothmaxiter
integer
4
Specifies the number of smoothing iterations. When smoothtransition is on.
smoothmaxdepth
integer
6
Specifies the maximum element smoothing depth. When smoothtransition is on.
Examples
Insert boundary layers to an existing mesh containing both quadrilateral elements and triangular elements.
Code for Use with Java
Model model = ModelUtil.create("Model");
model.component().create("comp1");
GeomSequence g = model.component("comp1").geom().create("geom1", 2);
MeshSequence m = model.component("comp1").mesh().create("mesh1", "geom1");
 
g.create("sq1", "Square");
g.create("sq2", "Square");
g.feature("sq2").setIndex("pos", "1", 0);
g.create("c1", "Circle");
g.feature("c1").set("r", "0.2");
g.feature("c1").setIndex("pos", "1.5", 0);
g.feature("c1").setIndex("pos", "0.5", 1);
g.create("co1", "Compose");
g.feature("co1").selection("input").init().set(new String[]{"c1", "sq1", "sq2"});
g.feature("co1").set("formula", "sq1+sq2-c1");
g.run();
 
m.create("map1", "Map");
m.feature("map1").selection().geom("geom1", 2);
m.feature("map1").selection().set(new int[]{1});
m.create("ftri1", "FreeTri");
m.create("bl1", "BndLayer");
m.feature("bl1").create("blp", "BndLayerProp");
m.feature("bl1").feature("blp").selection().set(new int[]{2, 3, 5, 6, 8, 9, 10, 11});
m.run();
Code for Use with MATLAB
model = ModelUtil.create('Model');
model.component.create('comp1');
g = model.component('comp1').geom.create('geom1', 2);
m = model.component('comp1').mesh.create('mesh1', 'geom1');
g.create('sq1', 'Square');
g.create('sq2', 'Square');
g.feature('sq2').setIndex('pos', '1', 0);
g.create('c1', 'Circle');
g.feature('c1').set('r', '0.2');
g.feature('c1').setIndex('pos', '1.5', 0);
g.feature('c1').setIndex('pos', '0.5', 1);
g.create('co1', 'Compose');
g.feature('co1').selection('input').init.set({'c1', 'sq1', 'sq2'});
g.feature('co1').set('formula', 'sq1+sq2-c1');
g.run;
 
m.create('map1', 'Map');
m.feature('map1').selection.geom('geom1', 2);
m.feature('map1').selection.set(1);
m.create('ftri1', 'FreeTri');
m.create('bl1', 'BndLayer');
m.feature('bl1').create('blp', 'BndLayerProp');
m.feature('bl1').feature('blp').selection.set([2, 3, 5, 6, 8, 9, 10, 11]);
m.run;
Create a boundary layer mesh consisting of prism elements along the boundary layer boundaries and tetrahedral elements in the interior:
Code for Use with Java
Model model = ModelUtil.create("Model");
model.component().create("comp1");
GeomSequence g = model.component("comp1").geom().create("geom1", 3);
MeshSequence m = model.component("comp1").mesh().create("mesh1", "geom1");
 
g.create("blk1", "Block");
g.feature("blk1").setIndex("size", "10", 0);
g.feature("blk1").setIndex("size", "5", 1);
g.feature("blk1").setIndex("size", "5", 2);
g.create("sph1", "Sphere");
g.feature("sph1").setIndex("pos", "3", 0);
g.feature("sph1").setIndex("pos", "2.5", 1);
g.feature("sph1").setIndex("pos", "2.5", 2);
g.create("dif1", "Difference");
g.feature("dif1").selection("input").init().set(new String[]{"blk1"});
g.feature("dif1").selection("input2").init().set(new String[]{"sph1"});
g.run();
 
m.create("ftet1", "FreeTet");
m.create("bl1", "BndLayer");
m.feature("bl1").create("blp", "BndLayerProp");
m.feature("bl1").feature("blp").selection().
set(new int[]{2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13});
m.run();
Code for Use with MATLAB
model = ModelUtil.create('Model');
model.component.create('comp1');
g = model.component('comp1').geom.create('geom1', 3);
m = model.component('comp1').mesh.create('mesh1', 'geom1');
 
g.create('blk1', 'Block');
g.feature('blk1').setIndex('size', '10', 0);
g.feature('blk1').setIndex('size', '5', 1);
g.feature('blk1').setIndex('size', '5', 2);
g.create('sph1', 'Sphere');
g.feature('sph1').setIndex('pos', '3', 0);
g.feature('sph1').setIndex('pos', '2.5', 1);
g.feature('sph1').setIndex('pos', '2.5', 2);
g.create('dif1', 'Difference');
g.feature('dif1').selection('input').init.set({'blk1'});
g.feature('dif1').selection('input2').init.set({'sph1'});
g.run;
 
m.create('ftet1', 'FreeTet');
m.create('bl1', 'BndLayer');
m.feature('bl1').create('blp', 'BndLayerProp');
m.feature('bl1').feature('blp').selection.set(2:13);
m.run;
See Also
BndLayerProp, Map, Sweep