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Tet-Dominant algorithm: Quick tutorial

Link to tutorial project containing the geometry:

Go to tutorial project

1) Copy project with CAD model

  • Click on the project link above which brings you to the project overview page of the tutorial project.
  • On the top right corner click on Actions and select Make a copy
  • In the opening dialog you can change the title of the project or its description
  • Click on Copy project to create a copy in your personal dashboard (this operation could take a few seconds)
  • After successful copy you will see the new project appearing in you dashboard. Hover over the project and click on the appearing arrow on the top right corner of the project thumbnail to directly open the project.
  • Once the project is loaded, you should see the bearing block geometry in the viewer
  • Use the Geometry Event Log to check on the dimension of your CAD file
Bearing block geometry

Bearing block geometry

2) Creating a new mesh

  • Create a new mesh with the uploaded geometry by clicking the Mesh Geometry button
  • In the newly created mesh, the CAD geometry serves as its base

3) Choosing the mesh type

  • Once the mesh operation is created, choose the desired type - in this case we want to apply the Tet-dominant algorithm.

4) Defining the operation parameters

  • Choose the desired mesh order (First order in this tutorial)
  • If you want to run a solid mechanics simulation you may choose the second order to get better results, but for fluid simulations always choose first order
  • Select the overall automatic sizing and the desired mesh fineness ( 2-Coarse in this tutorial)
  • The fineness parameter influences the maximum ratio between adjacent element’s edge lengths, it affects geometries with larger dimensions and small-sized details in particular
  • Specify the Number of computing cores for the meshing operation, based on complexity of the geometry and degree of fineness required (4 in this tutorial)

5) Start the mesh operation and examine the mesh

  • Click on the Start
  • Check the notification area on the lower left for status information
  • Once the operation is finished the viewer will be updated with the mesh
Bearing block mesh generated with coarse automatic mesh sizing

Bearing block mesh generated with coarse automatic mesh sizing

The resulting mesh for the bearing block shows a reasonable discretization of the geometry and may now serve for a first simulation setup. However, as we can see, some parts such as the small radii are not represented accurately in every detail.

In order to comply with higher mesh quality requirements, we may adjust the meshing parameters manually using a manual sizing (with the sizing 6 - custom the number of segments per radius can be manually set to increase the resolution of the fillets) or add a mesh refinement on the fillets with a local fineness of 4 - fine. Both methods are presented in the Tet-dominant: Advanced tutorial.

Comparison of mesh details different sizing

Comparison of mesh details with coarse sizing (left), additional refinement with fine sizing (middle) or using a custom sizing with number of segments per radius increased to 4