Fluid-Structure-Characteristics of Flexible Wings for Wind Turbines

风力发电机柔性翼的流体结构特性

• 批准号: 280772364
• 负责人: Professor Dr.-Ing. Kai-Uwe Bletzinger
• 金额: --
• 依托单位: Lehrstuhl für Aerodynamik und Strömungsmechanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/280772364?language=en
• 关键词: Fluid; Structure; Characteristics; Flexible; Wings

Rotors for wind turbines featuring flexible wings may optionally obtain a similar aerodynamic performance compared to conventional rotor blade concepts. In this context, the present research concentrates on the interaction between air flow and flexible structure of a membrane-type lifting surface, which has a significant influence on the aerodynamic performance on the one hand and on the structural loads on the other hand. The investigations are based on a wing configuration with load-bearing beam structure and flexible wing. The adaption characteristics of the flexible wing should on the one hand allow a desired target pressure distribution and aerodynamic performance, and on the other hand provide lower structural loads relative to conventional structural designs along with a reduction of peak loads in highly unsteady or gusty incoming flow. The focus of the work is on the methods for high-quality numerical simulations of the interaction between the flexible wing and the acting flow and the validation of the simulation results by performing wind tunnel experiments for a wing segment. A future aim is to show the possible potentials of “FlexWing” applications and to exploit the results of these investigations for feasibility and economic studies.

与传统的转子叶片概念相比，具有柔性机翼的风力涡轮机的转子可能会获得类似的空气动力学性能。在这种情况下，目前的研究集中于空气流与膜型提升表面的柔性结构之间的相互作用，这一方面对空气动力学性能产生了重大影响，另一方面对结构载荷产生了重大影响。投资基于带负载梁结构和柔性机翼的机翼配置。柔性机翼的适应特性应一方面允许所需的目标压力分布和空气动力学性能，另一方面，相对于常规结构设计，以及降低高度不稳定或阵风的峰值进气流的峰值载荷。这项工作的重点是通过对机翼段的风洞实验进行风洞实验，对柔性机翼与作用流之间相互作用的高质量数值模拟的方法。未来的目标是显示“弹性”应用的可能潜力，并利用这些投资的结果来实现可行性和经济研究。