Fluid-structure coupling for the stability and energy performance of a wind turbine with hyper- flexible blades, under different hydrodynamic flow reg

流固耦合研究超柔性叶片风力发电机在不同水动力流量调节下的稳定性和能量性能

• 批准号: 2676291
• 金额: --
• 依托单位: CRANFIELD UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2676291
• 关键词: Fluid; structure; coupling; stability; energy

To understand and prevent the risk of wind turbine failure in an Offshore environment, it is critical to carry out multi-scale and multidisciplinary studies, which include the interaction of wind with a single turbine and also the interactions between turbines. The distance between each turbine thus needs to be optimised to reduce turbulence effects from turbines on others located downstream, and more research is required for the design (or re-design) of the turbines, including the blades which are becoming longer, slimmer and more flexible. Recent research has highlighted that using flexible blades for wind turbines can dramatically increase their efficiency. The project will have two main objectives. The first one is to develop a 3D fluid-structure interaction (FSI) numerical model to investigate loading effects and stability for 'hyper'-flexible wind turbine blades. This model will couple the structural flexible state of the wind turbine blades and the surrounding fluid flow under various flow conditions, including wind velocity and direction. The second objective will be to numerically investigate wake effects for 'hyper'-flexible blades-based wind turbines. A Moving Immersed Boundary Method for FSI (MIBM) will be applied. This method accounts for the real shape of the moving blades, to overcome turbulence models limitations, and to characterize with high accuracy the vortex structures downstream of the rotor.

为了了解和预防海上环境中风力涡轮机故障的风险，进行多尺度和多学科研究至关重要，其中包括风与单个涡轮机的相互作用以及涡轮机之间的相互作用。因此，需要优化每个涡轮机之间的距离，以减少涡轮机对位于下游的其他涡轮机的湍流效应，并且需要对涡轮机的设计（或重新设计）进行更多的研究，包括变得更长、更细和更柔性的叶片。最近的研究强调，使用柔性叶片的风力涡轮机可以显着提高其效率。该项目将有两个主要目标。第一个是发展一个三维流固耦合数值模型来研究“超”柔性风力涡轮机叶片的载荷效应和稳定性。该模型将风力涡轮机叶片的结构柔性状态与各种流动条件（包括风速和风向）下的周围流体流动相耦合。第二个目标将是数值研究“超”柔性叶片风力涡轮机的尾流效应。将采用FSI的移动浸没边界法（MIBM）。该方法考虑了运动叶片的真实的形状，克服了湍流模型的局限性，并以高精度表征了转子下游的涡流结构。