polyMesh

Contains all the mesh details as:

Sets

A set is an ordered part of the mesh (often a portion of the domain), usually produced by the utilities: checkMesh,topoSet or setSet

Diversifying the output between:

• pointZone
• faceZone
• cellZone

Boundary

Each patch can be put inGroups for pre and post-processing purpose. Each patch can thus be in several groups. The patchGroup generated by this makes e.g. setting of boundary conditions easier. A patch boundary condition definition takes precedence over a patchGroup boundary condition.