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Implementation and evaluation of automated tetrahedral-prismatic mesh generation software
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics. (Flight Dynamics)ORCID iD: 0000-0002-3199-8534
FS Dynamics Sweden AB.
2015 (English)In: Computer-Aided Design, ISSN 0010-4485, E-ISSN 1879-2685Article in journal (Refereed) Published
Abstract [en]

An open-source implementation of an efficient mesh generation procedure for hybrid prismatic-tetrahedral meshes intended for use in Reynolds-averaged Navier-Stokes solutions is presented. The method employed combines the established, and very fast, Delaunay-based tetrahedral mesh generator TetGen with a novel technique for the creation of a prismatic layer, where constrained global optimization of the envelope is employed. Once a well-shaped envelope is thus obtained, a semi-structured layer of pentahedral elements is extruded between wall and envelope surface. Satisfactory mesh quality is demonstrated by comparing solutions obtained using the new meshes with reference data computed on high-quality advancing-front grids. Mesh generation time is shown to be substantially smaller than with many other methods. Overall, the presented implementation is deemed a valuable tool for cases where many meshes need to be generated for routine analyses and turnaround time is critical. 

Place, publisher, year, edition, pages
Elsevier, 2015.
Keyword [en]
Automatic Mesh Generation, Boundary Layer, Tetrahedral-Prismatic Mesh
National Category
Mechanical Engineering
Research subject
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-171086DOI: 10.1016/j.cad.2015.06.010ISI: 000368951500010Scopus ID: 2-s2.0-84954364489OAI: oai:DiVA.org:kth-171086DiVA: diva2:842286
Note

QC 20150811

Available from: 2015-07-17 Created: 2015-07-17 Last updated: 2017-12-04Bibliographically approved

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Eller, David

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