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Mesh Size Input Data Format
The format of the local mesh size control which is part of model
description has been explained in
Section Model Input Data Format.
The adaptive mesh size control is based on
a background mesh. The required mesh size is specified at nodes
of this mesh and is interpolated over the individual
elements of the background mesh. The following elements
can form the background mesh
- linear edge (2 nodes),
- linear triangle (3 nodes) and
- linear tetrahedron (4 nodes).
If quadratic elements are used, the midside nodes are ignored.
The background mesh is generally independent of the
model being discretized but it can be (more likely) tightly connected
to it. It is usually identical with the mesh generated during the
previous step of an adaptive analysis. The adaptive mesh size input data file is
provided by the application analysis code but its manual
creation (as an startup mesh size control) is also possible. The
description of the background mesh input data format is provided in
the following section.
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Daniel Rypl
2008-06-04