Node144 - CFD SUPPORT

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Meshes in OpenFOAM

OpenFOAM uses Cartesian coordinates. All the cases in OpenFOAM are computed as a three-dimensional. Even if the case is one-dimensional or two-dimensional, it is necessary to have at least one volume cell in each direction.
In general, there are three ways how to create mesh for OpenFOAM:
- Creating mesh in blockMesh – part of OpenFOAM
- Creating mesh in snappyHexMesh – part of OpenFOAM
- Creating mesh with other tools and importing it to OpenFOAM. OpenFOAM supports following mesh conversions:
  ansysToFoam
  cfx4ToFoam
  datToFoam
  fluent3DMeshToFoam
  fluentMeshToFoam
  foamMeshToFluent
  foamToStarMesh
  foamToSurface
  gambitToFoam
  gmshToFoam
  ideasUnvToFoam
  kivaToFoam
  mshToFoam
  netgenNeutralToFoam
  plot3dToFoam
  sammToFoam
  star3ToFoam
  star4ToFoam
  tetgenToFoam
  vtkUnstructuredToFoam

OpenFOAM always uses unstructured meshes. Meshes have following structure:

nameOfTheTestCase
constant
polyMesh	Mesh directory
points	List of mesh points
faces	List of mesh faces
owner	List of owners of all entities
neighbour	List of neighbours
boundary	List of boundaries of the mesh

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