Generates nodes and tetrahedral volume elements from detached exterior area elements (facets).

Compatible Products: – | Pro | Premium | Enterprise | Ent PP | Ent Solver | DYNA


Specifies whether to keep the area elements after the tetrahedral meshing operation is complete.



Delete area elements (default).



Keep area elements.


The FVMESH command generates a tetrahedral volume mesh from a selected set of detached exterior area elements (facets). (Detached elements have no solid model associativity.) The area elements can be triangular-shaped, quadrilateral-shaped, or a mixture of the two.

The FVMESH command is in contrast to the VMESH command, which requires a volume to be input.

The main tetrahedra mesher [MOPT,VMESH,MAIN] is the only tetrahedra mesher that supports the FVMESH command. The alternate tetrahedra mesher [MOPT,VMESH,ALTERNATE] does not support FVMESH. MESH200 elements do not support FVMESH.

Tetrahedral mesh expansion [MOPT,TETEXPND,Value] is supported for both the FVMESH and VMESH commands. Tet-mesh expansion is the only mesh control supported by FVMESH.

Triangle- or quadrilateral-shaped elements may be used as input to the FVMESH command. Where quadrilaterals are used, the default behavior is for the pyramid-shaped elements to be formed at the boundary when the appropriate element type is specified. See the MOPT,PYRA command for details.

The FVMESH command does not support multiple "volumes." If you have multiple volumes in your model, select the surface elements for one "volume," while making sure that the surface elements for the other volumes are deselected. Then use FVMESH to generate a mesh for the first volume. Continue this procedure by selecting one volume at a time and meshing it, until all of the volumes in the model have been meshed.

If an error occurs during the meshing operation, the area elements are kept even if KEEP = 0.

Menu Paths

Main Menu>Preprocessor>Meshing>Mesh>Tet Mesh From>Area Elements

Release 18.2 - © ANSYS, Inc. All rights reserved.