DUNE grid implementations for reservoir simulation -- library

 The Open Porous Media (OPM) software suite provides libraries and
 tools for modeling and simulation of porous media processes, especially
 for simulating CO2 sequestration and improved and enhanced oil recovery.
 .
 opm-grid provides implementations of grids for reservoir simulation,
 corner point or more general pillar grids, following the DUNE grid interface:
 CpGrid, a parallel corner point grid, and PolyhedralGrid a more general serial
 grid implementation of an unstructured, legacy, grid.
 .
 A standard grid type in the petroleum industry, corner-point grids fills
 the domain with a relatively low number of cells while still providing
 sufficient flexibility to model faults, fractures and erosion. The grid
 format was originally designed with an eye towards geological modeling
 rather than numerical simulation, but is still suitable for e.g. low order
 finite volume discretizations.
 .
 This package provides the library of the grid implementations.