| タイトル | An upwind multigrid method for solving viscous flows on unstructured triangular meshes |
| 本文（外部サイト） | http://hdl.handle.net/2060/19940012588 |
| 著者（英） | Bonhaus, Daryl Lawrence |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1993-08-13 |
| 言語 | eng |
| 内容記述 | A multigrid algorithm is combined with an upwind scheme for solving the two dimensional Reynolds averaged Navier-Stokes equations on triangular meshes resulting in an efficient, accurate code for solving complex flows around multiple bodies. The relaxation scheme uses a backward-Euler time difference and relaxes the resulting linear system using a red-black procedure. Roe's flux-splitting scheme is used to discretize convective and pressure terms, while a central difference is used for the diffusive terms. The multigrid scheme is demonstrated for several flows around single and multi-element airfoils, including inviscid, laminar, and turbulent flows. The results show an appreciable speed up of the scheme for inviscid and laminar flows, and dramatic increases in efficiency for turbulent cases, especially those on increasingly refined grids. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 94N17061
NASA-TM-109343
NAS 1.15:109343 |
| 権利 | No Copyright |
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