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Volume mesh generation by rotational sweep

Paranjape, Sumit, Timothy Tautges

Research Notes, 26th International Meshing Roundtable, Sandia National Laboratories, September 18-21 2017

INTERNATIONAL
MESHING
ROUNTABLE

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

Sumit Paranjape, Siemens Industry Software Computational Dynamics Ltd, GB, sumit.paranjape@siemens.com
Timothy Tautges, Siemens PLM Software Inc., US, timothy.tautges@siemens.com

Research Note Abstract
Sweeping is a powerful tool for generating good quality meshes in volumes that can be characterized as 2.5D. There exist robust algorithms for mesh generation by extrusion of a source surface mesh along a curvilinear path, with varying cross section, to the target surface. A characteristic of the sweeping algorithm is that the guide surfaces connecting the source and target are fitted with a structured quad mesh. This paper presents a generalization of sweeping algorithm to include cases where the swept volume is generated by rotation of the source surface(s) to the target surface(s), where source/target surfaces share edges or vertices. Setting up the sweep parameters on the guide surfaces and meshing the guide surfaces with a quad dominant mesh containing a strip of triangular faces at the axis of rotation is the crux of the new algorithm. We have used the rotational sweep algorithm described in this paper for meshing cut sections of components having rotational symmetry such as nozzles, injectors, and pipes.

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