COMSOL Multiphysics™

meshsweep
The property elsweeplayers determines the distribution of the mesh element
layers in the sweep direction. The value of this property is an even numbered cell
array where the odd entries contain subdomain indices, either as scalar values, or as
vectors with subdomain indices, and the even entries contain scalar values or vectors
specifying the element layer distribution for the corresponding subdomain(s). If the
element layer distribution is specified by a scalar, the element layers for the
corresponding subdomain(s) are equally distributed and the number of element
layers equals the value of the scalar. To get full control over the element layer
distribution for a subdomain, the vector form is used. The values in the vector, that
are sorted and starts with 0, specifies the distances of the element layers along the
direction of the sweep for the corresponding subdomain(s).
Hauto is an integer between 1 and 9 that controls the element size in the generated
mesh. The default value is 5 which means that the element size is set to 1/10 of the
size of the geometry for the elements not affected by the elsweeplayers property.
Use the property subdomain to specify the subdomains to be meshed. If you use
this property together with the meshstart property, the value auto means that all
subdomains that are not meshed in the starting mesh are meshed, none means that
no further subdomains are meshed, and all means that all subdomains are meshed
(or remeshed). It is also possible to specify the subdomains to be meshed (or
remeshed) using a vector of subdomain indices.
The meshstart property is used when meshing a geometry interactively. The value
of this property is the starting mesh of the meshing operation.
The property sourceface is a cell array specifying the source faces for the
subdomains. The value of this property is an even numbered cell array where the
odd entries contain subdomain indices, either as scalar values, or as vectors with
subdomain indices, and the even entries contain the source face indices for the
corresponding subdomain(s).
The property targetface defines the target faces for the subdomains. The syntax
of this property is the same as for the sourceface property.
If the source and/or target face is not specified for a subdomain, the software
automatically tries to determine these faces.
The following criteria must be met by the input geometry object for the sweeping
technique to work.
• Each subdomain must be bounded by one shell, that is, a subdomain must not
contain holes that do not penetrate the source and target face.
298 | CHAPTER 1: COMMAND REFERENCE