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EBMesh: An Embedded Boundary Meshing Tool

Hong-Jun Kim and Timothy J. Tautges

Proceedings, 19th International Meshing Roundtable, Springer-Verlag, pp.227-242, October 3-6 2010

IMR
PROCEEDINGS

19th International Meshing Roundtable
Chattanooga, Tennessee, USA.
October 3-6, 2010

Argonne National Laboratory, Argonne, IL, U.S.A
Email:hongjun@mcs.anl.gov
Argonne National Laboratory, Argonne, IL, U.S.A
Email:tautges@mcs.anl.gov

Summary
This paper describes a method for constructing Cartesian meshes for embedded boundary algorithms by using a ray-tracing technique. In this approach, each mesh cell is distinguished as being inside, outside, or on the boundary of the input geometry, which is determined by firing rays parallel to x/y/z coordinates. The most expensive process of the embedded boundary mesh generation, an edge-geometry intersection test, is performed for the group of edges on a fired ray line together, which decreases the computational complexity of the whole method significantly. Produced boundary cells also have edge-cut fraction information and volume cut fraction information for each material. This work is implemented to be enable to directly import various CAD-based solid model formats and as an open-source code to be used easily in many engineering simulation fields.

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