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3D Metric-Aligned and Orthogonal Solution Adaptive Mesh Generation

Marcum, David, Frederic Alauzet

Proceedings, 26th International Meshing Roundtable, Elsevier, Science Direct, September 18-21 2017

INTERNATIONAL
MESHING
ROUNTABLE

26th International Meshing Roundtable
Barcelona, Spain
September 18-21, 2017

David Marcum, CAVS and Dept. of Mech. Engr., Mississippi State University, US, marcum@cavs.msstate.edu
Frederic Alauzet, Gamma3 Team, INRIA Saclay, France, FR, Frederic.Alauzet@inria.fr

Abstract
A new 3D metric-orthogonal method for metric-based anisotropic tetrahedral mesh generation is presented. The approach uses an advancing-point type point placement that aligns the elements with the underlying metric field and creates quasi-structured local topology. It is based on well-proven methodology and adds novel point-placement strategies that produce solution-adapted anisotropic meshes that are optimal in size and alignment with the solution gradients upon which the metric field is based. The overall methodology is extended to 3D from a previously developed 2D process. Results for several analytical and actual CFD simulation examples are presented that demonstrate that aligned high-quality anisotropic tetrahedral meshes which are optimal for the solution process can be reliably generated.

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