X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Fadditional_hypo.doc;h=9b732a0454da96e47fa41964aefe74c7269f9e10;hp=938c7870e213fc7bea88e806c18154c993dcabf7;hb=513a8ebdac590b2e23d81adcb2fc1de76df90eef;hpb=7aeaccc07520cb61b45c11d88e0dc2e0c699edc2
diff --git a/doc/salome/gui/SMESH/input/additional_hypo.doc b/doc/salome/gui/SMESH/input/additional_hypo.doc
index 938c7870e..9b732a045 100644
--- a/doc/salome/gui/SMESH/input/additional_hypo.doc
+++ b/doc/salome/gui/SMESH/input/additional_hypo.doc
@@ -38,6 +38,19 @@ has been locally defined on the opposite edge.
See Also a sample TUI Script of a
\ref tui_propagation "Propagation hypothesis" operation
+\anchor propagofdistribution_anchor
+Propagation of Node Distribution on Opposite Edges
+
+Propagation of Node Distribution on Opposite Edges allows to propagate
+distribution of nodes onto an opposite edge. If a local hypothesis and
+propagation are defined on an edge of a quadrangular face, the
+opposite edge will have the same number of nodes and the same
+relations between segment lengths, unless another hypothesis
+has been locally defined on the opposite edge.
+
+
See Also a sample TUI Script of a
+\ref tui_propagation "Propagation hypothesis" operation
+
\anchor quadrangle_preference_anchor
Quadrangle Preference
@@ -62,37 +75,67 @@ computations.
\image html viscous_layers_hyp.png
+\image html viscous_layers_2d_hyp.png
+
- Name - allows to define the name of the hypothesis.
- Total thickness - gives the total thickness of element layers.
- Number of layers - defines the number of element layers.
- Stretch factor - defines the growth factor of element height
from the mesh boundary inwards.
-- Specified Edges are - defines how the shapes specified by
+
- Extrusion method (available in 3D only) - defines how
+ position of nodes are found during prism construction and how
+ creation of distorted and intersecting prisms is prevented.
+
- Surface offset + smooth method extrudes nodes along normal
+ to underlying geometrical surface. Smoothing of internal surface of
+ element layers is possible to avoid creation of invalid prisms.
+ - Face offset method extrudes nodes along average normal of
+ surrounding mesh faces till intersection with a neighbor mesh face
+ translated along its own normal by the layers thickness. Thickness
+ of layers can be limited to avoid creation of invalid prisms.
+ - Node offset method extrudes nodes along average normal of
+ surrounding mesh faces by the layers thickness. Thickness of
+ layers can be limited to avoid creation of invalid prisms.
+\image html viscous_layers_extrusion_method.png "Prisms created by the tree extrusion methods at the same other parameters"
+
+- Specified Faces/Edges are - defines how the shapes specified by
the next parameter are used.
-
- Faces without layers and Edges with/without layers -
- in the 3D case it defines geometrical faces on which element layers
- should not be constructed; in the 2D case it defines geometrical edges
- on which element layers either should be or should not be
- constructed, depending on the value of the previous parameter
- (Specified Edges are).
+
- Faces/Edges with/without layers -
+ defines geometrical faces or edges on which element layers
+ either should be or should not be constructed, depending on the
+ value of the previous parameter (Specified Faces/Edges are).
+ Faces (or edges) can be selected either in the Object Browser or in
+ the VTK Viewer.
\note A mesh shown in the 3D Viewer can prevent selection of faces
- and edges, just hide the mesh to avoid this. To avoid a long wait when a
+ and edges, just hide the mesh to avoid this. Sometimes a face to
+ select is hidden by other faces, in this case consider creating a
+ group of faces you want to select in the Geometry module.
+ To avoid a long wait when a
geometry with many faces (or edges) is displayed, the number of faces
(edges) shown at a time is limited by the value of "Sub-shapes
- preview chunk size" preference (in Preferences/Mesh/General tab).
-
- Whatever shapes are specified by this
- parameter, the element layers are not constructed on geometrical
- faces shared by several solids in 3D case and edges shared by
- several faces in 2D case. In other words the element layers can be
- constructed on boundary faces and edges, and are not constructed on
- internal faces and edges. There is an exception to this rule in 2D
- case: if "Viscous Layers 2D" hypothesis is assigned to a sub-mesh,
- the element layers can be constructed on boundary edges of the shape
- of this sub-mesh.
+ preview chunk size" preference (in Preferences/Mesh/General tab).
+
+
+ If faces/edges without layers are specified, the element layers are
+ not constructed on geometrical faces shared by several solids in 3D
+ case and edges shared by several faces in 2D case. In other words,
+ in this mode the element layers can be constructed on boundary faces
+ and edges only, and are not constructed on internal faces and
+ edges. There is an exception to this rule: if a hypothesis is
+ assigned to a sub-mesh, the element layers can be constructed on
+ boundary faces/edges of the shape of this sub-mesh, at same time
+ possibly being internal faces/edges within the whole model.
\image html viscous_layers_on_submesh.png 2D viscous layers constructed on boundary edges of a sub-mesh on a disk face.
+ If you use \b several hypotheses to define viscous layers on faces of
+ one solid, keep in mind the following. Each hypothesis defines a set
+ of faces with viscous layers (even if you specify faces without
+ layers). The sets of faces with viscous layers defined by several
+ hypotheses should not intersect, else the module won't add an
+ hypothesis that is incompatible with another one.
+ Also you can't define different number of layers on adjacent faces
+ of a solid.
+ This logic is also valid for the 2D hypothesis.
@@ -101,5 +144,4 @@ computations.
See also a sample TUI script of a \ref tui_viscous_layers
"Viscous layers construction".
-
*/