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Volume 3, Issue 2
Three-Dimensional Finite Element Superconvergent Gradient Recovery on Par6 Patterns

Jie Chen & Desheng Wang

DOI: 10.4208/nmtma.2010.32s.4

Numer. Math. Theor. Meth. Appl., 3 (2010), pp. 178-194.

Published online: 2010-03

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  • Abstract

In this paper, we present a theoretical analysis for linear finite element superconvergent gradient recovery on Par6 mesh, the dual of which is centroidal Voronoi tessellations with the lowest energy per unit volume and is the congruent cell predicted by the three-dimensional Gersho's conjecture. We show that the linear finite element solution $u_h$ and the linear interpolation $u_I$ have superclose gradient on Par6 meshes. Consequently, the gradient recovered from the finite element solution by using the superconvergence patch recovery method is superconvergent to $\nabla u$. A numerical example is presented to verify the theoretical result.

  • Keywords

Superconvergence, Par6, finite element method, centroidal Voronoi tessellations, Gersho's conjecture

  • AMS Subject Headings

65N30

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{NMTMA-3-178, author = {Jie Chen and Desheng Wang}, title = {Three-Dimensional Finite Element Superconvergent Gradient Recovery on Par6 Patterns}, journal = {Numerical Mathematics: Theory, Methods and Applications}, year = {2010}, volume = {3}, number = {2}, pages = {178--194}, abstract = {

In this paper, we present a theoretical analysis for linear finite element superconvergent gradient recovery on Par6 mesh, the dual of which is centroidal Voronoi tessellations with the lowest energy per unit volume and is the congruent cell predicted by the three-dimensional Gersho's conjecture. We show that the linear finite element solution $u_h$ and the linear interpolation $u_I$ have superclose gradient on Par6 meshes. Consequently, the gradient recovered from the finite element solution by using the superconvergence patch recovery method is superconvergent to $\nabla u$. A numerical example is presented to verify the theoretical result.

}, issn = {2079-7338}, doi = {https://doi.org/10.4208/nmtma.2010.32s.4}, url = {http://global-sci.org/intro/article_detail/nmtma/5995.html} }
TY - JOUR T1 - Three-Dimensional Finite Element Superconvergent Gradient Recovery on Par6 Patterns AU - Jie Chen & Desheng Wang JO - Numerical Mathematics: Theory, Methods and Applications VL - 2 SP - 178 EP - 194 PY - 2010 DA - 2010/03 SN - 3 DO - http://doi.org/10.4208/nmtma.2010.32s.4 UR - https://global-sci.org/intro/article_detail/nmtma/5995.html KW - Superconvergence, Par6, finite element method, centroidal Voronoi tessellations, Gersho's conjecture AB -

In this paper, we present a theoretical analysis for linear finite element superconvergent gradient recovery on Par6 mesh, the dual of which is centroidal Voronoi tessellations with the lowest energy per unit volume and is the congruent cell predicted by the three-dimensional Gersho's conjecture. We show that the linear finite element solution $u_h$ and the linear interpolation $u_I$ have superclose gradient on Par6 meshes. Consequently, the gradient recovered from the finite element solution by using the superconvergence patch recovery method is superconvergent to $\nabla u$. A numerical example is presented to verify the theoretical result.

Jie Chen and Desheng Wang. (2010). Three-Dimensional Finite Element Superconvergent Gradient Recovery on Par6 Patterns. Numerical Mathematics: Theory, Methods and Applications. 3 (2). 178-194. doi:10.4208/nmtma.2010.32s.4
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