COMSOL Multiphysics™

posteval
TABLE 1-25: VALID PROPERTY/VALUE PAIRS
PROPERTY NAME PROPERTY VALUE DEFAULT DESCRIPTION
Refine integer| auto 3 Refinement of element
for evaluation points
Solnum integer vector | all See below Solution number
| end
Spoint double matrix Local coordinates for
simplex elements
T double vector Time for evaluation
U
solution object or
vector
fem.sol or 0 Solution for evaluation
The property Refine constructs evaluation points by making a regular refinements
of each element. Each mesh edge is divided into Refine equal parts. If auto is used,
an automatic refinement value is computed internally and used, which depends on
the maximum element order and the number of elements evaluated on. This value
is most useful in postplot.
Use the properties Spoint, Bpoint, and Prpoint to specify arbitrary local element
evaluation points for simplex elements (triangular, tetrahedral, and edge elements),
quadrilateral/block elements, and prism elements, respectively. If you specify any of
these properties, the fields t and q in the output postdata structure are empty, and
the property Cont is neglected.
The property Edim decides which elements to evaluate on. Evaluation takes place
only on elements with space dimension Edim. If not specified, Edim=sdim is used,
where sdim is the space dimension of the geometry. For example, in a 3D model, if
evaluation is done on edges (1D elements), Edim is 1. Similarly, for boundary
evaluation (2D elements), Edim is 2, and for subdomain evaluation (3D elements),
Edim is 3 (default in 3D).
The property Dl controls on which domains (subdomains, boundaries, etc.)
evaluation should take place. If Geomnum is a vector, Dl must be a cell array of the
same length as Geomnum containing domain lists for each geometry.
The property Cont controls if the post data is forced to be continuous on element
edges. When Cont is set to internal, only elements not on interior boundaries are
made continuous.
The expressions ei are evaluated for one or several solutions. Each solution
generates an additional row in the d field of the post data output structure. The
properties Solnum and T control what solutions are used for the evaluations. If
334 | CHAPTER 1: COMMAND REFERENCE