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This record activates global mesh refinement or global mesh coarsening.
This is not available for -tria3 and -tet4 elements.
Either refinement_method is -h_refinement
(more of the same elements) or refinement_method is
-p_refinement (higher order elements) or refine_method is
-p_coarsen (lower order elements). Note that alternating
-p_refinement with -p_coarsen is possible.
As a special option for the -h_refinement method, the format
refine_globally index -h_refinement
switch_
switch_
switch_
can be used. By example in 1D, only refine_globally
index -h_refinement switch_
should be specified.
By example in the -hex8 element,
is the isoparametric coordinate
running from the first node to the second node,
runs from the first node
the third node and
runs from the first node to the fifth node.
A isoparametric direction will be refined if the corresponding switch
is set to -yes. This option allows for refinement in specific directions.
It should be used with care however, and only gives proper results if
the
,
and
directions of the elements match.
Rules for old and new:
- A new generated element inherits its data items
from the old element it is generated from.
- If a new generated node is placed on an old element edge it inherits
those data items of the old nodes on that old edge that
have a property in common (e.g. all old nodes on that edge have
node_locate specified.); then arbitrarily the data
item of one of the old nodes is taken.
- If a new generated node is placed inside an old element
it inherits those data items of the old nodes of that old element that
have a property in common (e.g. all old nodes of that old element have
node_locate specified.); then arbitrarily the data
item of one of the old nodes is taken.
- For all new nodes the node_dof records are interpolated from
the old element nodes node_dof records by using the
old element interpolation functions.
See also control_mesh_refine_globally_geometry.
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root
1998-11-16