Use the tools in the 3D unstructured solver panel to define how the selected unstructured voxel blocks should be initialized.
Unstructured voxel blocks are a special type of voxel block that combine the benefits of
both unstructured and voxel blocks: the ability to interface with and grow T-Rex layers off of
surface domains while still using hierarchical Cartesian cells (i.e. voxel cells) to
fill the remainder of the volume. This type of block can be created by choosing the
cell type in the
Automatic Volume Mesh
Note: Unstructured Voxel blocks allow the voxel cells to interface
directly with the surface domains and/or T-Rex front. Therefore, this type of block can
contain all of the supported volume cell types (i.e. tetrahedra, pyramids, prisms, and
hexahedra). On the other hand, Voxel blocks contain only hierarchical Cartesian cells (i.e.
The Solve panel offers the same controls for Unstructured Voxel blocks as it does for
Unstructured blocks, with a couple of key differences:
- The Initialize Boundary Only option on the Solve tab is disabled for
Unstructured Voxel blocks since the boundaries of these blocks cannot be initialized
independent from the interior.
- The Algorithm parameter on the Attributes tab is set to Voxel
and cannot be changed. The isotropic region of the grid is filled primarily with voxel
cells, however, the Delaunay algorithm is still used to fill the buffer
region between the voxel cells and the surface domains or exposed T-Rex front.