A comparison of tetrahedral mesh improvement techniques

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Automatic mesh generation and adaptive refinement methods for complex three-dimensional domains have proven to be very successful tools for the efficient solution of complex applications problems. These methods can, however, produce poorly shaped elements that cause the numerical solution to be less accurate and more difficult to compute. Fortunately, the shape of the elements can be improved through several mechanisms, including face-swapping techniques that change local connectivity and optimization-based mesh smoothing methods that adjust grid point location. The authors consider several criteria for each of these two methods and compare the quality of several meshes obtained by using different combinations ... continued below

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15 p.

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Freitag, L.A. & Ollivier-Gooch, C. December 1, 1996.

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Description

Automatic mesh generation and adaptive refinement methods for complex three-dimensional domains have proven to be very successful tools for the efficient solution of complex applications problems. These methods can, however, produce poorly shaped elements that cause the numerical solution to be less accurate and more difficult to compute. Fortunately, the shape of the elements can be improved through several mechanisms, including face-swapping techniques that change local connectivity and optimization-based mesh smoothing methods that adjust grid point location. The authors consider several criteria for each of these two methods and compare the quality of several meshes obtained by using different combinations of swapping and smoothing. Computational experiments show that swapping is critical to the improvement of general mesh quality and that optimization-based smoothing is highly effective in eliminating very small and very large angles. The highest quality meshes are obtained by using a combination of swapping and smoothing techniques.

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15 p.

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OSTI as DE97000900

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  • 5. international meshing roundtable, Pittsburgh, PA (United States), 10-11 Oct 1996

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  • Other: DE97000900
  • Report No.: ANL/MCS-P--607-0896
  • Report No.: CONF-9610201--1
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/414383 | External Link
  • Office of Scientific & Technical Information Report Number: 414383
  • Archival Resource Key: ark:/67531/metadc682377

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  • December 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 14, 2015, 6:39 p.m.

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Freitag, L.A. & Ollivier-Gooch, C. A comparison of tetrahedral mesh improvement techniques, report, December 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc682377/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.