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CSALF-Q: A Bricolage Algorithm for Anisotropic Quad Mesh Generation
Mukherjee, Nilanjan
20th International Meshing Roundtable, Springer-Verlag, pp.489-509, October 23-26 2011
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IMR PROCEEDINGS
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20th International Meshing Roundtable
Paris, France
October 23-26, 2011
Meshing & Abstraction Group
Digital Simulation Solutions
Siemens PLM Software
Email:mukherjee.nilanjan@siemens.com
Summary
ìBricolageî, a multidisciplinary term used extensively in visual arts, anthropology
and cultural studies, refers to a creation that borrows elements from a diverse range
of existing designs. The term is applied here to describe CSALF-Q, a new automatic 2D
quad meshing algorithm that combines the strengths of recursive subdivision, loop-paving
and transfinite interpolation to generate surface meshes that are anisotropic yet boundary
structured, robust yet sensitive to size fields and competitive in performance.
This algorithm is based on the understanding of boundary loops which are initially
meshed recursively with a new, boundary based ìloop-pavingî technique that balances
anisotropy and mesh quality. The remaining interior domain is filled out by a symbiotic
process that shuttles between recursive subdivision, transfinite interpolation and
loop-paving in an efficient manner. The mesh is finally cleaned and smoothed. Loop-fronts
are classified and rule sets are defined for each, to aid optimum point placement. Stencils
used for loop-closure are presented. Results are presented that compare both local and global
element quality of meshes generated by the new algorithm with that of TQM (TriaQua Mesher)
which is also known to handle variegated size maps.
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