Array-Based Hierarchical Mesh Generation in Parallel
Ray, Navamita, Iulian Grindeanu, Xinglin Zhao, Vijay Mahadevan, Xiangmin Jiao
24th International Meshing Roundtable, Elsevier Ltd., October 12-14 2015
24th International Meshing Roundtable
Mathematics and Computer Science, Argonne National Laboratory, Argonne, IL 60439, USA
Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY 11794, USA.
In this paper, we describe an array-based hierarchical mesh generation capability through uniform refinement of unstructured
meshes for efficient solution of PDE's using finite element methods and multigrid solvers. A multi-degree, multi-dimensional and
multi-level framework is designed to generate the nested hierarchies from an initial mesh that can be used for a number of purposes
such as multi-level methods to generating large meshes. The capability is developed under the parallel mesh framework "Mesh
Oriented dAtaBase" a.k.a MOAB . We describe the underlying data structures and algorithms to generate such hierarchies and
present numerical results for computational efficiency and mesh quality. We also present results to demonstrate the applicability of
the developed capability to a multigrid finite-element solver.
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