Training Guide > Meshing Tutorials > Control Valve Meshing Tutorial > Polyhedral Meshing Example > Setting the Boundary Mesh Values
Setting the Boundary Mesh Values
If no boundary or region wise values are set then the meshing models default to the global reference values. For this case, we will set custom values for the surface remesher triangulation (to increase the density) and prism layer thickness for the valve wall boundary. This is because:
- This is the area of flow interest and requires additional cells to be created;
- The gap between the valve and the outside wall is thinner than the rest of the geometry, so we will use a thinner prism layer in this area.
The custom values are set on a boundary wise basis. Open the Regions>Region 1>Boundaries>Valve Wall>Mesh Conditions node to view the available options:
We will use the Custom Surface Size and Customize Prism Mesh options for this case.
- Click on the Custom Surface Size node.
- In the Properties window, turn on the Custom surface size option.
- Next, click on the Customize Prism Mesh node.
- In the Properties window, select the option from the pull-down menu for Customize Prism Mesh.
The values for the boundary can now be set. Open the Valve Wall>Mesh Values node to display the available parameters. We will set the surface remesher size values first.
- Select the Relative Minimum Size node under the Surface Size node.
- Set the Percentage of Base value to
4.0 in the Properties window.
- Select the Relative Target Size node under the Surface Size node.
- Set the Percentage of Base value to
4.0 in the Properties window.
- Select the Relative Size node under the Prism Layer Thickness node.
- Set the Percentage of Base size to
2.0.
This completes the boundary mesh setup.
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