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AHyper Tree Grid Implementation for AMR Mesh Manipulation and Visualization in VTK

Carrard, Thierry, Charles Law and Phillipe Pebay

Research Notes, 21st International Meshing Roundtable, Springer-Verlag, pp.Research Note, October 7-10 2012

INTERNATIONAL
MESHING
ROUNTABLE

21st International Meshing Roundtable
San Jose, CA
October 7-10, 2012

Commissariat a l'Energie Atomique et aux Energies Alternatives
Kitware
Email: thierry.carrard@cea.fr, {charles.law,philippe.pebay}@kitware.com

Summary
Adaptive Mesh Refinement (AMR) grids are particularily efficient to mitigate the tension between numerical accuracy and computational cost. The Visualization Toolkit (VTK) offers data structures and algorithms to treat 2D and 3D AMR meshes, either "patch-based" or as binary trees. This paper summarizes our extension of the former capability to the case of generic subdivision and arbitrary rectilinear geometry, using an optimized, generic tree traversal technique together with a fast dual grid construction.

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