Previous: Computational Mesh in SALOME Up: Computational Mesh in SALOME Next: Local Refinement on Faces
This is an automatically generated documentation by LaTeX2HTML utility. In case of any issue, please, contact us at info@cfdsupport.com.

3D Mesh Definition

This section presents quick and simple way how to generate a tetrahedral volume mesh.

  • At first, start the Mesh module by clicking the Modules window and select the Mesh, see Figure crossref.
60 1

Figure: Mesh Module

To create a new mesh navigate to the menu Mesh > Create Mesh and follow these steps (see Fig. crossref):

  1. Set the Geometry to Cyclone-final.
  2. Set the Name to Cyclone.
  3. Set the Algorithm to Netgen 1D-2D-3D.
  4. Click settings icon next to the Hypothesis window and select NETGEN 3D Simple Parameters and new window appears.
  5. In Hypothesis Construction window rename the name to My NETGEN 3D Simple Parameters.
  6. Check Local Length in 1D part and change value to crossref 3.
  7. Other parts, i.e. 2D and 3D stay unchanged (Length from faces).
  8. Click OK and then click Apply and Close in the original window.
61 1

Figure: New Mesh.

62 1
  • For the CFD purposes, it is necessary to define the boundaries of the geometry, i.e. inlets, outlets and walls.
  • Navigate to the menu Mesh > Create Group and follow these steps (see Fig. crossref):
    1. Set the Mesh to Cyclone.
    2. Check the Face option.
    3. Set the Name to Cyclone-inlet.
    4. Check the Group on geometry option.
    5. Set Geometrical Objects to Cyclone-inlet from Object Browser.
    6. Click Apply.
    7. Repeat similar steps for the Cyclone-outlet and Cyclone-wall (see crossref).
63 1

Figure: Defining the name of the boundaries – inlet.

64 1

Figure: Defining name of boundaries – outlet and wall.

  • Navigate to the menu Mesh > Compute to run the meshing process.
  • Meshing process can be followed in the progress bar which appears automatically.
67 1

Figure: Mesh Creation.

  • When the computation process finished a table with mesh information appears.
  • Moreover, the mesh is visualized within the viewer.

Figure: Mesh Computation Finished.

  • SALOME provides several formats for exporting a mesh.
  • OpenFOAM can handle the UNV format. The details will be explained at the end of this section.
  • To export the mesh click the Cyclone (mesh) in the Object Browser, navigate to the menu File > Export > UNV file and save the mesh as Cyclone-first.unv (see Fig. crossref).

Figure: Mesh Export.