Sizing Source Sizing Function

An intuitive method for adding a sizing function to the tetrahedral meshing workflow is introduced with CAE Fidesys17.1 in May 2020. This method places a graphical ellipsoid on the model allowing the user to modify the geometry and mesh size settings of the ellipsoid thereby affecting the impact of the sizing function on the mesh.

Commands Available

select [sizing_source <ids>] [{add|remove}]

create sizing_source id ellipsoid [location <options>] \

[radius <xval> <yval> <zval>] [axis <options>] [size <value>] growth_factor <value>]

delete sizing_source id <value>

modify sizing_source id ellipsoid [location <options>] \

[radius <xval> <yval> <zval>] [axis <options>] [size <value>] growth_factor <value>]

sizing_source visibility {on|off}

Possible workflow using the GUI

Create the sizing source ellipsoid

Navigate to the Sizing Sources action buttons
- Select Mode - Mesh
- Select Entity - Sizing Sources
- Select Action - Create Sizing Function Source

Complete the command panel dialog
- Clicking on the Location or Axis push buttons will launch additional dialogs for precise location and management of the ellipsoid.

Attach the sizing source ellipsoid(s) to the volume(s)

After creating the sizing source ellipsoids the next step is to assign these sizing functions to volumes. Simply creating the sizing sources will not affect the meshing. In order to have these sizing sources act as sizing functions the sources must be attached (or assigned) to volumes.

Select Action - Attach Sizing Function Source
Select the Add Volume(s) radio button
Pick the volumes that will use Sizing Source sizing functions
Click Apply

Note: Use this same command panel to remove the association between Sizing Source sizing functions and volumes. Select the Remove Volume(s) radio button then click Apply.

Set the volume's meshing scheme to tetmesh and mesh the volume

Once the sizing sources are created and assigned to volumes, mesh the volumes using CAE Fidesys.

volume <n> scheme tetmesh

mesh volume <n>

Modify a Sizing Source sizing function

An existing Sizing Source may be modified using one of several methods:

From the CAE Fidesys command line

From the Modify Sizing Function Source command panel

From the Properties Page

Selecting and picking a Sizing Source

Users may select a Sizing Source using several methods:

From the command line

select sizing_source <id>

From the model tree

Using the select filter on the toolbar then click on a Sizing Source object

From a Sizing Source pickwidget on a command panel

Changing the visibility of a Sizing Source

The visibility of a Sizing Source can be toggled on and off from the toolbar

Deleting a Sizing Source sizing object

A Sizing Source may be deleted using several methods:

From the command line

delete sizing_source id <n>

From the model tree by clicking on a Sizing Source, then right-click to show the context menu.

From the Sizing Sources Delete command panel
- The command panel supports deleting multiple Sizing Source objects with one command.

From the graphics window when the Sizing Source select filter is active and Sizing Source is selected

With the Delete key
- After selecting a Sizing Source object in the model tree or in the graphics window press the Delete key on your keyboard.