Bifurcation theory as applied to nonlinear aeroelastics of wind turbine blades.

分岔理论应用于风力涡轮机叶片的非线性气动弹性。

• 批准号: 2268080
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2268080
• 关键词: Bifurcation; theory; applied; nonlinear; aeroelastics

This research will explore whether the low-order geometrically exact modelling approach can adequately represent the complex dynamics of a slender wind turbine blade, under different operating scenarios. Furthermore, it will investigate the extent to which unsteady aerodynamics, including dynamic stall phenomena, play a role in turbine aeroelastic behaviour, and how to best represent this in a reduced order model. In parallel, a methodology will be developed, allowing the translation of three-dimensional high-fidelity models to a low order representation, via geometrically and structurally representative parametric functions. Then, depending on parameters, delineating a global dynamical picture via numerical continuation and bifurcation analysis. This research will thus provide a rapid method to inform high-fidelity modelling, reducing the design space over which optimisation is carried out, ultimately reducing development costs.

本研究将探讨低阶几何精确建模方法是否能够充分代表细长风力涡轮机叶片在不同操作场景下的复杂动力学。此外，它将研究非定常空气动力学（包括动态失速现象）在涡轮机气动弹性行为中发挥作用的程度，以及如何在降阶模型中最好地表示这一点。与此同时，将开发一种方法，允许通过几何和结构代表性参数函数将三维高保真模型转换为低阶表示。然后，根据参数，通过数值延拓和分岔分析描绘出全局动态图。因此，这项研究将提供一种快速方法来进行高保真建模，减少进行优化的设计空间，最终降低开发成本。