| タイトル | Discrete Adjoint-Based Design for Unsteady Turbulent Flows On Dynamic Overset Unstructured Grids |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120001339 |
| 著者（英） | Nielsen, Eric J.; Diskin, Boris |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2012-01-09 |
| 言語 | eng |
| 内容記述 | A discrete adjoint-based design methodology for unsteady turbulent flows on three-dimensional dynamic overset unstructured grids is formulated, implemented, and verified. The methodology supports both compressible and incompressible flows and is amenable to massively parallel computing environments. The approach provides a general framework for performing highly efficient and discretely consistent sensitivity analysis for problems involving arbitrary combinations of overset unstructured grids which may be static, undergoing rigid or deforming motions, or any combination thereof. General parent-child motions are also accommodated, and the accuracy of the implementation is established using an independent verification based on a complex-variable approach. The methodology is used to demonstrate aerodynamic optimizations of a wind turbine geometry, a biologically-inspired flapping wing, and a complex helicopter configuration subject to trimming constraints. The objective function for each problem is successfully reduced and all specified constraints are satisfied. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| レポートNO | NF1676L-12832
AIAA Paper 2012-0554 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
