"CFD simulations are finite-volume based, so the solver calculates mass, momentum and energy fluxes through the surface of these control volumes," says CD-adapco Vice President Dennis Nagy.
Of bubbles and polyhedrons
In 1887, Lord Kelvin found that a 14-sided polyhedron (tetrakaidecahedron) would most efficiently pack bubbles into foam when all bubbles are of equal size. In 1994, physicists Denis Weaire and Robert Phelan found that a mixture of 12 and 14-sided polyhedrons partition space 3% more efficiently than Kelvin's foam.
The recent polyhedral meshes actually use an unrestricted number of faces, so they fill space in most efficiently. In fact, for a given resolution level, a mesh of polyhedral cells has fewer faces than a mesh of any other cell type.
CD-adapco Inc., cd-adepco.com