Usage POST-PRO for visualization of meshes and results

This sample is known to work on the latest SALOME release.
The compatibility with previous versions of SALOME is not guaranteed, though the sample can work on old versions also.

Objective

This exercise illustrates the use of POST-PRO SALOME for visualization of mesh and scalar and vector result fields. Note that Gauss points, Animation, Tables and 2D plots functionality are not covered by this exercise.

Import med file The sequence of actions is as follows: Launch SALOME. Create a new study. Launch POST-PRO module. Import file TimeStamps.med (menu File/Import MED file ) Import file pointe.med (menu File/Import MED file )
Visualization of meshes Presentation can be created on each Family (Nodes, Edges, Faces or Cells) or group of elements. Representation type (Points, Wireframe, Surface, Insideframe, Surfaceframe, Shrink) can be selected to make presentation obvious. Select dom/Family/On Edges in the object browser – popup: Create presentation Representation: Surface Representation: Shrink Representation: Points Select dom/Family/On Cells in the object browser – popup: Create presentation Representation: Surfaceframe Select maa1/Family/On Cells in the object browser – popup: Create presentation Representation: Surface Representation: Shrink Select maa1/Groupes/groupe1 in the object browser – popup: Create presentation Representation: Surface Representation: Shrink

Scalar map Scalar map is the basic type of visualization used in all other presentations. Scalar map can be built for the whole mesh or group. Each cell is colored according to field value in it. Scalar map can be created for one time stamp or the whole set of field time stamps. In the last case Scalar map can be seen for each time stamp using animation tools. Both scalar and vector fields can be visualized. For vector field modulus of vector or one of its components can be selected for visualization. Scalar bar shows correspondence between used color and value. Linear and logarithmic scaling can be applied to the field values coloring and scalar bar. User defines range of scalar bar (minimum and maximum values), position of origin, scalar bar sizes and orientation, number of colors and labels, font properties of title and labels. Select dom/fields/pression/0.157446 in the object browser popup: Scalar Map Check “Use field range” radio button Nb of colors: 64, Nb of labels: 5 Orientation: Vertical Origin X:0.05, Y:0.05 Dimensions Width: 0.1, Height:0.9 Check “Save as default values” checkbox Validate Representation: Surfaceframe Select dom/fields/temperature in the object browser popup: Scalar Map Validate default values Representation: Surfaceframe Open "Slider" tool bar Menu View->Windows->Slider Start animation Click pause button Move slider to time 1.09421 Select maa1/fields/fieldcelldouble/0 in the object browser popup: Scalar Map Select Scalar mode: Modulus Check “Use imposed range” radio button Max: 5 Tab “Input”: Check “Use only groups” checkbox Select groupe1, Click "+" Validate Representation: Surfaceframe
ISO Surfaces ISO Surfaces are surfaces with equal field values. User defines number of surfaces, minimum and maximum values to be displayed with ability to adopt scalar bar range to these values. Both scalar and vector fields can be visualized. Select dom/fields/vitesse in the object browser popup: ISO Surfaces Nb of surfaces: 10 Validate Representation: Points Start animation Click pause button Move slider to time 0.797247 Select maa1/fields/fieldcelldouble/0 in the object browser popup: ISO Surfaces Nb of surfaces: 8 Maximum value: 5.5 Click “Update scalar bar range with these values” button Check “Show values” checkbox Nb per surface: 1 Validate Show maa1/Family/On Cells in wireframe mode
Cut Planes Cut Planes presents distribution of field values along a definite number of planes cutting the given mesh. User defines number of planes and their position. It is possible to deform plane correspondingly to field value. Select dom/fields/vitesse/0.657864 in the object browser popup: Cut planes Orientation: select “//Y-Z” radio button Rotation around Y (Z to X): 0 Rotation around Z (X to Y): 45 Number of planes: 10 Check “Deformation” checkbox Select Vectors: vitesse Scale factor: 0.2 Validate Show dom/Family/On Edges in wireframe mode Select maa1/fields/fieldcelldouble/0 in the object browser popup: Cut planes Orientation: select “//Y-Z” radio button Rotation around Y (Z to X): 30 Rotation around Z (X to Y): 0 Number of planes: 7 Validate Show maa1/Family/On Cells in wireframe mode
Cut Lines Cut lines are generated by section of mesh by base plane and simultaneously a set of parallel planes and colored according to field values. A data table can be created from Cut Lines presentation. This table consists from the field scalar values located on each cut line. The data table can be used for construction of a 2d plot of curves. Select dom/fields/vitesse/0.657864 in the object browser popup: Cut lines Orientation: select “//Z-X” radio button Rotation around X (Y to Z): 0 Rotation around Y (Z to X): 0 Uncheck “Generate Data Table” and “Generate curves” checkboxes Tab “Cut planes” Orientation: select “//Y-Z” radio button Rotation around Y (Z to X): 0 Rotation around Z (X to Y): 45 Number of planes: 10 Validate Show Cut planes and dom/Family/On Edges Select maa1/fields/fieldcelldouble/0 in the object browser popup: Cut lines Orientation: select “//Z-X” radio button Rotation around Z (X to Y): 0 Rotation around X (Y to Z): 0 Check “Generate Data Table” and “Generate curves” checkboxes Tab “Cut planes” Orientation: select “//Y-Z” radio button Rotation around Y (Z to X): 30 Rotation around Z (X to Y): 0 Number of planes: 7 Validate Show Cut planes and maa1/Family/On Cells. Decrease opacity of Cut planes up to 20%. Select maa1/fields/fieldcelldouble/0/CutLines/Table in the object browser popup: Show Table
Activate Plot2D scene to check curves visualization
Deformed shape Deformed shape visualizes vector values by shifting mesh Select dom/fields/vitesse /0.657864 in the object browser popup: Deformed shape Scale factor: 0.1 Check “Magnitude coloring” check box Validate Representation: Points Select maa1/fields/fieldcelldouble/0 in the object browser popup: Deformed shape Scale factor: 0.3 Check “Magnitude coloring” check box Validate Representation: wireframe Show maa1/Family/On Cells in wireframe mode
Vectors Vector values can be shown as vectors with different presentation (pointer type and position, line width, colored and not). Select dom/fields/vitesse /0.657864 in the object browser popup: Vectors Scale factor: 0.1 Line width: 2 Check “Magnitude coloring” and “Use glyphs” check boxes Glyph type: Arrows Glyph position: Tail Validate Select maa1/fields/fieldcelldouble/0 in the object browser popup: Vectors Scale factor: 0.4 Line width: 2 Check “Magnitude coloring” and “Use glyphs” check boxes Glyph type: Cones (6) Glyph position: Head Validate Show maa1/Family/On Cells in wireframe mode
Stream Lines Stream Lines presentation transforms vectors having most similar direction into lines thus that vectors are tangent to line. A streamline can be thought of as the path that a massless particle takes in a vector field. User selects controls to set the relative number of starting points, the size of the output line segments composing the streamline, the accuracy of streamline construction and line smoothness, the maximum length of the stream line, direction of streamlines. Select dom/fields/vitesse /0.657864 in the object browser popup: Stream Lines Source type: None Used points: 0.3 Integration Step: 0.01 Propagation Time: 10 Direction: Both Check “Magnitude coloring” check box Validate
Plot 3D Plot 3D visualizes field values for cells lying on cutting plane as a smooth surface or a set of contours using relief and coloring. User selects orientation of cut plane, rotations of the plane in 3D space around the axes of the selected orientation (in degrees), position of plane (relative or absolute), presentation type (Surface, Contour) and input number of contours (active when Contour presentation type is selected). Select maa1/fields/fieldcelldouble/0 in the object browser popup: Plot 3D Orientation: select “//Z-X” radio button Rotation around Z (X to Y): 30 Rotation around X (Y to Z): 0 Position: Check “Relative” check box Value: 0.7 Scale factor: 0.35 Presentation type: Check “Surface” check box Validate Show maa1/Family/On Cells in wireframe mode Select maa1/fields/fieldcelldouble/0/Plot 3D in the object browser - popup: Edit Presentation type: Check “Contour” check box Number of contours:20 Validate
Scalar Map on Deformed Shape Scalar Map on Deformed Shape is a mix of 2 presentations. Scalar Map for one field is built on a Deformed Shape for another field (only vector field can be used). Select maa1/fields/fieldcelldouble/0 in the object browser popup: Deformed Shape and Scalar Map Scale factor: 0.3 Scalar field: fieldcelldouble Current time stamp: 0 Tab “Scalar bar”: Check “Use imposed range” radio button Max: 5 Tab “Input”: Check “Use only groups” checkbox Select groupe1 Validate Compare result with scalar map (see 7.4 Scalar map). Other field can be used. Select maa1/fields/fieldcelldouble/0/ScalarDefShape in the object browser - popup: Edit Scalar field: fieldnodeint Tab “Scalar bar”: Check “Use field range” radio button Tab “Input”: Uncheck “Use only groups” checkbox Validate Representation: Surfaceframe