Computational Grids for Advanced Simulations. Hybrid Grids: CENTAUR combines the best of both structured and unstructured grids via a hybrid (prismatic/hexahedral/pyramidal/tetrahedral) meshing strategy. Mesh Element Types: CENTAUR allows for complex 2-D and 3-D geometries to be easily meshed using different mesh elements as required by the geometry and the needs of the particular flow simulation. Meshing Strategies: 3-D hybrid mesh generation allows for a mixed element mesh consisting of prisms or hexahedra in the boundary layer region and tetrahedra or hexahedra in the interior of the mesh domain. Mesh Generation Process: Generating a mesh with CENTAUR is simple and automatic and requires minimal user expertise.