6.1 Upstream: Gmsh to OpenFOAM (+3)
6.1 Upstream: Gmsh to OpenFOAM
# Convert Gmsh mesh to OpenFOAM format
gmshToFoam mesh.msh
# Check and fix orientation
checkMesh
# If needed: renumber for performance
renumberMesh -overwrite
6.2 Upstream: FreeCAD/CAD to OpenFOAM
# Export STL from FreeCAD/CAD
# Place STL in constant/triSurface/
# Use snappyHexMesh for mesh generation around geometry
6.3 Downstream: OpenFOAM to ParaView
foamToVTK -latestTime
# Open VTK/case.vtm in ParaView
# Or open the case directly: paraFoam (if paraview-openfoam plugin installed)
6.4 Python Integration (meshio)
import meshio
# Read OpenFOAM mesh
mesh = meshio.read("constant/polyMesh")
# Convert to other formats
meshio.write("output.vtu", mesh)