Automatic Volume Mesh

The Automatic Volume Mesh command provides tools for the automated creation of unstructured blocks from an existing surface mesh based on user-defined meshing extents, shape, and resolution goals. Entering Automatic Volume Mesh with a selection of domains allows you to create a new block. Alternatively, entering Automatic Volume Mesh with a block selected allows you to modify an existing block.

AVM Initial Panel
The initial panel for Automatic Volume Mesh lets you choose between modes to create volume mesh boundaries or use existing boundaries.

The recommended starting point to use the Automatic Volume Mesh command is a surface mesh (either created manually or by using the Automatic Surface Mesh command). Once these initial conditions are met, the command is designed to create an unstructured block in an automated manner. The objective of this command is to create the desired volume grid with minimum and intuitive input for defining the extents and the desired resolution of both the boundary layer and isotropic regions of the mesh.

Upon invoking this command, you will be presented with a choice between two different modes for Automatic Volume Mesh:

 

Caution: To create volume meshes for internal flow cases (i.e. the surface mesh defines the outer boundary of the volume), you need to create all domains and necessary supporting geometry to create a completely closed watertight volume and use the Use Existing Volume Mesh Boundaries mode. At this time, the Create Volume Mesh Boundaries mode cannot create symmetry planes for these types of blocks.

The options available within Automatic Volume Mesh change depending on which mode is selected. The images show the Global tab for Create Boundaries mode (left) and Use Existing Boundaries mode (right).

After making a selection on the initial panel, you will be presented with the Automatic Volume Mesh panel shown above. The panel is split into three tabs: Global, Boundary Conditions, and Advanced.

 

Note: All the settings in the Automatic Volume Mesh functionality are stored in the Pointwise project file as part of the Pointwise environment. Additionally, these settings can also be stored in a separate environment file using the Save Environment As command available in the File menu. This capability enables you to reuse the same Automatic Volume Mesh settings with different surface meshes without the need to re-define them.

For more on Automatic Volume Mesh, choose a topic below:

Demonstration

Automatic Volume Mesh: An Overview