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Improvement of a Bidimensional Overset Structured Mesh Generation and Adaptation Method, Based on a Near-Body/Off-Body Partitioning

Kultajev, E., C. Benoit, S. Peron, and A. Lerat

Research Notes, 20th International Meshing Roundtable, Springer-Verlag, pp.Research Note, October 23-26 2011


20th International Meshing Roundtable
Paris, France
October 23-26, 2011

Onera - The French Aerospace Lab, F-92322 Chatillon, France
DynFluid Lab., Arts et MĀ„etiers ParisTech, Paris, France

An automatic overset structured mesh generation and adaptation method for Computational Fluid Dynamics (CFD) is being developed at Onera. This method is based on computational domain partitioning into off-body Cartesian regions and near-body curvilinear regions [1] and has been introduced to simplify the mesh generation process. Off-body grids are a set of structured Cartesian grids that can be automatically generated and adapted [1, 2]. The Chimera method enables solution transfer between grids [3, 4, 5]. Previously, a method based on geometry decomposition identifying sharp edges has been developed to automatically generate short extension nearbody grids around bidimensional geometries with a regular step along the wall [6]. Here we describe an extension of this method, generating non-uniform, curvature-dependent and flow features-dependent grid step along the wall.

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