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Block topology generation for structured multi-block meshing with hierarchical geometry handling

Ali, Zaib, James Tyacke, Paul Tucker, Shahrokh Shahpar

Proceedings, 25th International Meshing Roundtable, Elsevier, Science Direct, September 26-30 2016

INTERNATIONAL
MESHING
ROUNTABLE

25th International Meshing Roundtable
Washington DC, U.S.A.
September 26-30, 2016

Zaib Ali, University of Cambridge, UK, GB, zaibali@gmail.com
James Tyacke, University of Cambridge, UK, GB, jct53@cam.ac.uk
Paul Tucker, University of Cambridge, UK, GB, pgt23@cam.ac.uk
Shahrokh Shahpar, University of Cambridge, UK, GB, shahrokh.shahpar@rolls-royce.com

Abstract
Multi-block structured mesh generation remains one of the most popular meshing techniques because of its superior simulation quality but it is difficult to apply when dealing with complex three dimensional (3D) domains. To this end, first a hybrid blocking approach, combining the medial axis based method with level set isosurface is presented and applied to mesh complex 3D external flow domains. Secondly, a hierarchical geometry handling approach is presented which makes use of the lower order modeling, overset meshes and zonal blocking to reduce the meshing and modeling effort. Typical external aerodynamics cases have been showcased to describe how such techniques can be used for efficiently addressing modern industrial meshing challenges.

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