Performance Improvement of a Wind Turbine Blade by Variable Thickness Membrane Airfoil Considering Two-Way Fluid-Solid Interaction
Publish place: 30th Annual International Conference of the Iranian Association of Mechanical Engineers
Publish Year: 1401
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME30_378
تاریخ نمایه سازی: 29 خرداد 1401
Abstract:
A membrane wind turbine airfoil is analyzed through two-way Fluid-Solid Interaction (FSI) using finite element method. The problem is considered as a quasi ۲D with full membrane flexibility. The results of the fluid-solid interaction in every time step are transferred to the subsequent step, and the effects of the fluid section and solid deformations on each other are also examined. The standard S۸۰۹ airfoil is investigated in four different angles of attack and a Reynolds number of ۲×۱۰۶. Initially, the membrane airfoil with uniform membrane thickness is investigated, and the superiority of its aerodynamic factors over rigid airfoil is confirmed. Next, variable-thickness membranes are considered to enhance the efficiency and improve aerodynamic performance compared to the uniform thickness state. Results show that membranes with variable thickness can increase the airfoil efficiency compared to the uniform-thickness condition. The power required to rotate the blade is also reduced in this case.
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Authors
Shaahin Dehdari
School of Mechanical Engineering, University of Tehran, Tehran, Iran;
Ali Asghar Atai
School of Mechanical Engineering, University of Tehran, Tehran, Iran;
Kobra Gharali
School of Mechanical Engineering, University of Tehran, Tehran, Iran;