| タイトル | Summary of the Fourth AIAA CFD Drag Prediction Workshop |
| 本文（外部サイト） | http://hdl.handle.net/2060/20100025833 |
| 著者（英） | Morrison, Joseph H.; Vassberg, John C.; Zickuhr, Tom; Brodersen, Olaf P.; Levy, David W.; Mani, Mori; Crippa, Simone; Tinoco, Edward N.; Murayama, Mitcuhiro; Eisfeld, Bernhard; Rider, Ben; Mavriplis, Dimitri J.; Wahls, Richard A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2010-06-26 |
| 言語 | eng |
| 内容記述 | Results from the Fourth AIAA Drag Prediction Workshop (DPW-IV) are summarized. The workshop focused on the prediction of both absolute and differential drag levels for wing-body and wing-body-horizontal-tail configurations that are representative of transonic transport air- craft. Numerical calculations are performed using industry-relevant test cases that include lift- specific flight conditions, trimmed drag polars, downwash variations, dragrises and Reynolds- number effects. Drag, lift and pitching moment predictions from numerous Reynolds-Averaged Navier-Stokes computational fluid dynamics methods are presented. Solutions are performed on structured, unstructured and hybrid grid systems. The structured-grid sets include point- matched multi-block meshes and over-set grid systems. The unstructured and hybrid grid sets are comprised of tetrahedral, pyramid, prismatic, and hexahedral elements. Effort is made to provide a high-quality and parametrically consistent family of grids for each grid type about each configuration under study. The wing-body-horizontal families are comprised of a coarse, medium and fine grid; an optional extra-fine grid augments several of the grid families. These mesh sequences are utilized to determine asymptotic grid-convergence characteristics of the solution sets, and to estimate grid-converged absolute drag levels of the wing-body-horizontal configuration using Richardson extrapolation. |
| NASA分類 | Aerodynamics |
| レポートNO | NF1676L-10988
AIAA Paper 2010-4547 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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