Aeroelastic response of an airfoil to gusts: Prediction and control strategies from computed energy maps |
| |
| Institution: | 1. School of Aeronautics, Northwestern Polytechnical University, 710072 Xi''an, China;2. State Key Laboratory for Northwestern Strength and Vibration of Mechanical Structures, Shaanxi Key Laboratory of Environment and Control for Flight Vehicle, School of Aerospace, Xi''an Jiaotong University, 710049 Xi''an, China;3. Mechanics and Environment Research Center, Xi''an Aerospace Propulsion Institute, 710100 Xi''an, China |
| |
| Abstract: | A method to predict the aeroelastic pitch response of an airfoil to gusts is presented. The prediction is based on energy maps generated by high-fidelity fluid dynamic simulations of the airfoil with prescribed pitch oscillations. The energy maps quantify the exchange of energy between the pitching airfoil and the flow, and serve as manifolds over which the dynamical states of aeroelastic airfoil system grow, decay and attain stationary states. This method allows us to study the full nonlinear response of the system to large gusts, and predict the growth and saturation of aeroelastic pitch instabilities. We also show that the manifold topology in these maps can be used to make informed modifications to the system parameters in order to control the response to gusts. |
| |
| Keywords: | Fluid–structure interaction Aeroelastic flutter Pitching wings Gust response Energy maps |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
