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An inside-out method for arbitrary polyhedra

Juretic, Franjo

23rd International Meshing Roundtable, Elsevier Ltd., pp.Research Note, October 12-15 2014


23rd International Meshing Roundtable
London, UK
October 12-15,2014

Creative Fields, Ltd., Ozaljska 106, 10110 Zagreb, Croatia

Meshes consisting of arbitrary polyhedra have gained popularity in the CFD community over the last decade, as a consequence of the advances in the solver technology. Furthermore, polyhedral meshes can be generated by retrieving the dual of a tetrahedral mesh, and there exist many methods which can generate tetrahedral meshes in complex geometries. In addition, polyhedral meshes have lower number of cells and better accuracy than their tetrahedral counterpart [4]. This note presents an effort to develop an inside-out method for generation of polyhedral meshes, which does not require high-quality input geometry, and is tolerable to small gaps, cracks and protrusions. Unlike methods which use hex-dominated templates, it is not so sensitive to the alignment of the template with the geometry because most of mesh faces have either five or six vertices. The method is tested on examples of both academic and industrial interest.

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