Extracting Feature Curves

Training Guide > Meshing Tutorials > Control Valve Meshing Tutorial > Polyhedral Meshing Example > Extracting Feature Curves

Your Ad Here

Extracting Feature Curves

Feature curves must be added to the import geometry in order to maintain sharp edges and any surface feature details in the surface remesher and volume meshes. Since STL surfaces do not contain feature edges in them, we will create new edges based on an angle criteria.

Right-click on the Regions>Region 1>Feature Curves node and select New Feature Curve>Mark Edges... from the pop-up menu.

The Mark Feature Edge Options dialog will appear. Do the following:

Use the selection arrows to move all the boundaries for Region 1 over to the Selected box.

Set the Sharp edge angle value to 20 degrees.

Unselect the Mark free edges, Mark non-manifold edges, Mark patch perimeters and Mark boundary perimeters options. These options could be left on as they will no affect on the resulting feature curve creation for this case.

The completed panel is shown below:

Press the Apply button to carry out the operation and create the feature curves and then press Close to close the dialog.

The output window will report the number of curves created, which will be 822 in this case. A new feature curve node called Sharp Edges (20deg.) will be created under the Feature Curves node.

A new feature curve geometry displayer will also have been added to the current scene. By default, the feature curves are shown in red as part of the model, as shown here:

The surface preparation related to the imported geometry is now complete. We can now proceed to setting up the meshing models that will be used.

Return to CD-adapco STAR-CCM+ Index

Your Ad Here