| タイトル | Recent Enhancements to the Development of CFD-Based Aeroelastic Reduced-Order Models |
| 本文（外部サイト） | http://hdl.handle.net/2060/20070018340 |
| 著者（英） | Silva, Walter A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2007-01-01 |
| 言語 | eng |
| 内容記述 | Recent enhancements to the development of CFD-based unsteady aerodynamic and aeroelastic reduced-order models (ROMs) are presented. These enhancements include the simultaneous application of structural modes as CFD input, static aeroelastic analysis using a ROM, and matched-point solutions using a ROM. The simultaneous application of structural modes as CFD input enables the computation of the unsteady aerodynamic state-space matrices with a single CFD execution, independent of the number of structural modes. The responses obtained from a simultaneous excitation of the CFD-based unsteady aerodynamic system are processed using system identification techniques in order to generate an unsteady aerodynamic state-space ROM. Once the unsteady aerodynamic state-space ROM is generated, a method for computing the static aeroelastic response using this unsteady aerodynamic ROM and a state-space model of the structure, is presented. Finally, a method is presented that enables the computation of matchedpoint solutions using a single ROM that is applicable over a range of dynamic pressures and velocities for a given Mach number. These enhancements represent a significant advancement of unsteady aerodynamic and aeroelastic ROM technology. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| 権利 | No Copyright |
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