| タイトル | Development and Application of Agglomerated Multigrid Methods for Complex Geometries |
| 本文（外部サイト） | http://hdl.handle.net/2060/20100025598 |
| 著者（英） | Diskin, Boris; Nishikawa, Hiroaki; Thomas, James L. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2010-06-28 |
| 言語 | eng |
| 内容記述 | We report progress in the development of agglomerated multigrid techniques for fully un- structured grids in three dimensions, building upon two previous studies focused on efficiently solving a model diffusion equation. We demonstrate a robust fully-coarsened agglomerated multigrid technique for 3D complex geometries, incorporating the following key developments: consistent and stable coarse-grid discretizations, a hierarchical agglomeration scheme, and line-agglomeration/relaxation using prismatic-cell discretizations in the highly-stretched grid regions. A signi cant speed-up in computer time is demonstrated for a model diffusion problem, the Euler equations, and the Reynolds-averaged Navier-Stokes equations for 3D realistic complex geometries. |
| NASA分類 | Mathematical and Computer Sciences (General) |
| レポートNO | NF1676L-10939 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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