A Combined Global Coarsening Method for 3D Multigrid Applications

Zong Zhe Li; Zheng Hua Wang; Lu  Yao; Wei Cao

doi:10.4028/www.scientific.net/AMM.236-237.1049

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 236-237A Combined Global Coarsening Method for 3D...

A Combined Global Coarsening Method for 3D Multigrid Applications

Abstract:

An automatic agglomeration methodology to generate coarse grids for 3D flow solutions on anisotropic unstructured grids has been introduced in this paper. The algorithm combines isotropic octree based coarsening and anisotropic directional agglomeration to yield a desired coarsening ratio and high quality of coarse grids, which developed for cell-centered multigrid applications. This coarsening strategy developed is presented on an unstructured grid over 3D ONERA M6 wing. It is shown that the present method provides suitable coarsening ratio and well defined aspect ratio cells at all coarse grid levels.

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Periodical:

Applied Mechanics and Materials (Volumes 236-237)

Pages:

1049-1053

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.236-237.1049

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Online since:

November 2012

Authors:

Zong Zhe Li, Zheng Hua Wang, Lu Yao, Wei Cao

Keywords:

Agglomeration Multigrid, Cell-Centered, Octree, Unstructured Grid

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References

[1] M.H. Lallemand, H. Steve, A. Dervieux, Unstructured multigridding by volume agglomeration: Current status, Computers & Fluids. 21 (1992) 397-433.

DOI: 10.1016/0045-7930(92)90047-y

Google Scholar

[2] W.A. Smith, Multigrid solution of transonic flow on unstructured grids, Adv. App. Comp. Flu. Dyn. (1990).

Google Scholar

[3] D. Strauss, J.L.F. Azevedo, On the development of an agglomeration multigrid solver for turbulent flows. J. Braz. Soci. Eng. 25 (2003) 315–324.

DOI: 10.1590/s1678-58782003000400001

Google Scholar

[4] K.A. Sørensen, O. Hassan, K. Morgan and N.P. Weatherill, Agglomerated multigrid on hybrid unstructured meshes for compressible flow, Int. J. Numer. Meth. Fluids, 40 (2002) 593-603.

DOI: 10.1002/fld.316

Google Scholar

[5] M. Emel, H.T. ismail, A Haluk, Development of a Quadtree Based Agglomeration Method for a Multigrid Viscous Flow Solver on Unstructured Grids, AIAA paper 2010-316.

DOI: 10.2514/6.2010-316

Google Scholar

[6] M. Emel, H.T. Ismail, A Haluk, Octree Based 3-D Unstructured Grid Coarsening and Multigrid Viscous Flow Solutions, AIAA paper 2011-757.

DOI: 10.2514/6.2011-757

Google Scholar

[7] J. Francescatto, A. Dervieux. A semi-coarsening strategy for unstructured multigrid with agglomeraton. Technical Report RR-2950, INRIA, (1996).

Google Scholar

[8] D.J. Mavriplis, Directional agglomeration multigrid techniques for high-reynolds-number viscous flows. AIAA Journal 37 (1999).

DOI: 10.2514/3.14312

Google Scholar