Directional Agglomeration with Quadtree Based Coarsening for 2D Anisotropic Unstructured Grids

This paper develops an automatic nested agglomeration methodology for 2D multigrid flow solutions over anisotropic unstructured grids. The algorithm combines isotropic quadtree based coarsening and anisotropic directional agglomeration method to yield a desired coarsening ratio and high quality of c...

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Vydáno v:Applied Mechanics and Materials Ročník 251; číslo New Trends in Mechanical Engineering and Materials; s. 10 - 14
Hlavní autoři: Wang, Zheng Hua, Cao, Wei, Li, Zong Zhe, Yao, Lu
Médium: Journal Article
Jazyk:angličtina
Vydáno: Zurich Trans Tech Publications Ltd 01.12.2012
Témata:
Agglomeration
Algorithms
Anisotropy
Coarsening
Mathematical analysis
Quadtrees
Strategy
Two dimensional
Quadtree
Cell-Centered
Agglomeration Multigrid
Unstructured Grid
ISBN:9783037855591, 3037855592
ISSN:1660-9336, 1662-7482, 1662-7482
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Shrnutí:This paper develops an automatic nested agglomeration methodology for 2D multigrid flow solutions over anisotropic unstructured grids. The algorithm combines isotropic quadtree based coarsening and anisotropic directional agglomeration method to yield a desired coarsening ratio and high quality of coarse grids, which works on cell-centered finite volume scheme. This coarsening strategy developed is presented on an unstructured grid over the RAE2822 airfoil. It is shown that the present method provides more suitable coarsening ratio and aspect ratio at all coarse grid levels than only quadtree based coarsening method.
Bibliografie:Selected, peer reviewed papers from the 2012 International Conference on Mechatronics and Materials Engineering (ICMME 2012), July 13-14, 2012, Hangzhou, China
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ISBN:9783037855591
3037855592
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.251.10