The Effects of Wake Dynamics and Trailing Edge Flap on Wind Turbine Blade

• Main Authors: Chien-Chih Chiu, 邱建智
• Other Authors: Yi-Ren Wang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/90725284968901945384

碩士 === 淡江大學 === 航空太空工程學系碩士班 === 102 === Wind power devices are now used to produce electricity, and commonly termed wind turbines. Load and performance calculations of wind turbines are usually performed by the Blade-Element/Momentum (BEM) method. However, the wake effects and the wake-blade structure interactions are less considered in most wind turbine analysis. This research studied a dynamic wake and blade interacted wind turbine. The Peters dynamic wake theory was applied. The effects of the wake and the configuration of the modern trailing-edge-flap (TEF) on the wind turbine blade were analyzed. The lift and the stresses distribution on the blade were performed by using semi- analytic and numerical wake theory and the combination with APDL(ANSYS Parametric Design Language) and FORTRAN language method. Some comparisons of the wind turbine blade with several TEF parameters such as TEF span-wise length, mid-span position and index angle were fully discussed. The wind turbine blade thrust and root stresses were also be presented. The wake and the TEF configuration effects on a 5MW turbine blade in the lift distribution and stresses were studied to conclude this research.