\page about_meshes_page About meshes
\n \b MESH represents a discrete approximation of a subset of the
\page about_meshes_page About meshes
\n \b MESH represents a discrete approximation of a subset of the
-three-dimensional space by \ref mesh_entities "elementary geometrical elements".
+three-dimensional space by \ref mesh_entities "elementary geometrical
+elements".
+
+A SALOME study can contain multiple meshes, but they do not
+implicitly compose one super-mesh, and finally each of them
+can be used (e.g. exported) only individually.
Mesh module provides several ways to create the mesh:
<ul>
<li>The main way is to \subpage constructing_meshes_page "construct the mesh"
on the basis of the geometrical shape produced in the Geometry
module. This way implies selection of
Mesh module provides several ways to create the mesh:
<ul>
<li>The main way is to \subpage constructing_meshes_page "construct the mesh"
on the basis of the geometrical shape produced in the Geometry
module. This way implies selection of
- <em>meshing parameters</em> (\ref
basic_meshing_algos_page "meshing algorithms" and
characteristics (e.g. element size) of a
- <em>meshing parameters</em> (\ref
basic_meshing_algos_page "meshing algorithms" and
characteristics (e.g. element size) of a
Construction of \subpage constructing_submeshes_page "sub-meshes"
allows to discretize some sub-shapes of the main shape, for example a face,
Construction of \subpage constructing_submeshes_page "sub-meshes"
allows to discretize some sub-shapes of the main shape, for example a face,
Meshing parameters of meshes and sub-meshes can be
\subpage editing_meshes_page "edited". (Upon edition only mesh entities
generated using changed meshing parameters are removed and will be
Meshing parameters of meshes and sub-meshes can be
\subpage editing_meshes_page "edited". (Upon edition only mesh entities
generated using changed meshing parameters are removed and will be
</li>
<li>Bottom-up way, using \ref modifying_meshes_page "mesh modification"
operations, especially \ref extrusion_page "extrusion" and \ref
</li>
<li>Bottom-up way, using \ref modifying_meshes_page "mesh modification"
operations, especially \ref extrusion_page "extrusion" and \ref
</li>
<li>The mesh can be \subpage importing_exporting_meshes_page "imported" from
(and exported to) the file in MED, UNV, STL, CGNS, DAT, GMF and
SAUVE formats.
</li>
</li>
<li>The mesh can be \subpage importing_exporting_meshes_page "imported" from
(and exported to) the file in MED, UNV, STL, CGNS, DAT, GMF and
SAUVE formats.
</li>
- <li>The 3D mesh can be generated from the 2D mesh, \ref
- importing_exporting_meshes_page "imported" or manually created. To
- setup the meshing parameters of a mesh not based on a geometry, just
- invoke \ref editing_meshes_page "Edit mesh / sub-mesh" command on
+ <li>The 3D mesh can be generated from the 2D mesh not based on geometry,
+ which was either \ref importing_exporting_meshes_page "imported" or created in
+ other way. To setup the meshing parameters of a mesh not based on geometry,
+ just invoke \ref editing_meshes_page "Edit mesh / sub-mesh" command on
The \b structure of a SALOME mesh is described by nodes and elements based on
these nodes. The geometry of an element is defined by the sequence of
The \b structure of a SALOME mesh is described by nodes and elements based on
these nodes. The geometry of an element is defined by the sequence of
-nodes constituting it and
-the <a href="http://www.code-aster.org/outils/med/html/connectivites.html">
- connectivity convention </a> (adopted from MED library). Definition of
-the element basing on the elements of a lower dimension is NOT supported.
+nodes constituting it and the \ref connectivity_page "connectivity convention"
+(adopted from MED library). Definition of the element basing on the elements
+of a lower dimension is NOT supported.
<li>\b Volume — 3D mesh element representing a part of 3D
space bound by volume facets. Nodes of a volume describing each
facet are defined by
<li>\b Volume — 3D mesh element representing a part of 3D
space bound by volume facets. Nodes of a volume describing each
facet are defined by
- the <a href="http://www.code-aster.org/outils/med/html/connectivites.html">
- MED connectivity convention.</a> A volume can be a tetrahedron, hexahedron,
+ the \subpage connectivity_page "connectivity convention".
+ A volume can be a tetrahedron, hexahedron,
pentahedron, pyramid, hexagonal prism or polyhedron.</li>
<li>\b 0D element — mesh element defined by one node.</li>
<li>\b Ball element — discrete mesh element defined by a
pentahedron, pyramid, hexagonal prism or polyhedron.</li>
<li>\b 0D element — mesh element defined by one node.</li>
<li>\b Ball element — discrete mesh element defined by a
Every mesh entity has an attribute associating it to a sub-shape it is
generated on (if any). The node generated on the geometrical edge or
surface in addition stores its position in parametric space of the
Every mesh entity has an attribute associating it to a sub-shape it is
generated on (if any). The node generated on the geometrical edge or
surface in addition stores its position in parametric space of the
and element with the same ID.
SALOME supports elements of second order, without a central node
(quadratic triangle, quadrangle, polygon, tetrahedron, hexahedron,
pentahedron and pyramid) and with central nodes (bi-quadratic triangle
and quadrangle and tri-quadratic hexahedron).<br>
and element with the same ID.
SALOME supports elements of second order, without a central node
(quadratic triangle, quadrangle, polygon, tetrahedron, hexahedron,
pentahedron and pyramid) and with central nodes (bi-quadratic triangle
and quadrangle and tri-quadratic hexahedron).<br>
- Using a global \ref quadratic_mesh_anchor "Quadratic Mesh"
hypothesis. (Elements with the central node are not generated in this way).
- Using \ref convert_to_from_quadratic_mesh_page operation.
- Using a global \ref quadratic_mesh_anchor "Quadratic Mesh"
hypothesis. (Elements with the central node are not generated in this way).
- Using \ref convert_to_from_quadratic_mesh_page operation.
