Parallel Unstructured Grids Package for the solution of CFD problems on parallel computers

摘要

We present a collection of Fortran 90 routines for the setting of unstructured grids on distributed systems. The routines implement methods to construct, distribute (using a third-party mesh partitioner) and set unstructured meshes of hexahedral, tetrahedral and triangles. Among other tasks, the routines can distribute a grid, create the connectivity table of elements and nodes, add overlapping to each sub-grid, perform basic operations such as getting the neighbours of a given element or node, set boundary facets and calculate element proprieties such as volume. The routines have been implemented in Fortran 90 using MPI and a object-based paradigm. METIS has been used as the mesh partitioner.