icmesh

Mesh, geometry and OpenFOAM utilities, used at ICHEC for technical computing and CFD pre-processing.

Extracted from icplot at its 0.5.0 tag, where the VTK and OpenFOAM backends were holding a plotting library's toolchain hostage.

Features

geometry: points, vectors, shapes (cuboid, cylinder, annulus, quad, circle), transforms and geometric operations.

mesh: hexahedral cells, edges, vertices and meshing operations, with OpenFOAM blockMesh/polyMesh read and write, and VTK export.

Installation

pip install icmesh

numpy and scipy are core. VTK export is opt-in, since it is a heavy dependency:

pip install icmesh[vtk]

Writing an OpenFOAM mesh through blockMesh needs OpenFOAM itself on the system; the code paths guard on its presence.

Copyright

Copyright 2026 Irish Centre for High End Computing

The software in this repository can be used under the conditions of the MIT license, which is available for reading in the accompanying LICENSE file.