| タイトル | CFL3D, FUN3d, and NSU3D Contributions to the Fifth Drag Prediction Workshop |
| 本文（外部サイト） | http://hdl.handle.net/2060/20130003235 |
| 著者（英） | Powell, Nicholas; Laflin, Kelly R.; Chaffin, Mark S.; Levy, David W.; Park, Michael A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2013-01-07 |
| 言語 | eng |
| 内容記述 | Results presented at the Fifth Drag Prediction Workshop using CFL3D, FUN3D, and NSU3D are described. These are calculations on the workshop provided grids and drag adapted grids. The NSU3D results have been updated to reflect an improvement to skin friction calculation on skewed grids. FUN3D results generated after the workshop are included for custom participant generated grids and a grid from a previous workshop. Uniform grid refinement at the design condition shows a tight grouping in calculated drag, where the variation in the pressure component of drag is larger than the skin friction component. At this design condition, A fine-grid drag value was predicted with a smaller drag adjoint adapted grid via tetrahedral adaption to a metric and mixed-element subdivision. The buffet study produced larger variation than the design case, which is attributed to large differences in the predicted side-of-body separation extent. Various modeling and discretization approaches had a strong impact on predicted side-of-body separation. This large wing root separation bubble was not observed in wind tunnel tests indicating that more work is necessary in modeling wing root juncture flows to predict experiments. |
| NASA分類 | Aerodynamics |
| レポートNO | NF1676L-15475
AIAA Paper 2013-0050 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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