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.

中文翻译：

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机翼对阵风的气动弹性响应：来自计算能量图的预测和控制策略

提出了一种预测机翼对阵风的气动弹性俯仰响应的方法。该预测基于由具有指定俯仰振荡的机翼的高保真流体动力学模拟生成的能量图。能量图量化了俯仰翼型和流动之间的能量交换，并作为气动弹性翼型系统的动力学状态增长、衰减和达到静止状态的流形。这种方法使我们能够研究系统对大阵风的完全非线性响应，并预测气动弹性俯仰不稳定性的增长和饱和。我们还表明，这些地图中的流形拓扑可用于对系统参数进行知情修改，以控制对阵风的响应。