Flutter performance of large-scale wind turbine blade with shallow-angled skins

2015 ◽  
Vol 132 ◽  
pp. 575-583 ◽  
Author(s):  
Khazar Hayat ◽  
Sung Kyu Ha
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Large Scale ◽  
Wind Turbine Blade

A Preliminary Study on Small Thermoplastic Composite Wind Turbine Blade Design and Fabrication

2015 ◽  
Author(s):  
Juan Garate ◽  
Stephen A. Solovitz ◽  
Dave Kim
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Large Scale ◽  
Chord Length ◽  
Wind Turbine Blade ◽  
Thermoplastic Composite ◽  
Horizontal Axis Wind Turbine ◽  
Limit Condition ◽  
Glass Fiber Reinforced ◽  
Turbine Blade Design

Today a large-scale wind turbine blade can be 70 m long and 5 m in root chord length, and it is fabricated in a single piece. This feature leads to high initial costs, as transportation of a large blade requires special trucks, escorts, and road adaptations. These constraints can account for approximately 6–7% of the total investment for the blade. In addition, the manufacturing process commonly used is a hand lay-up configuration of thermoset composite sheets. These materials are not reusable after fabrication, which is a non-renewable feature of existing systems. The project consists of manufacturing thermoplastic composite blades in segments, which are joined before installation at the turbine site. This paper addresses the preliminary research results when conducting design and fabrication of a small blade with this innovative approach. Three segmented blades are manufactured for a horizontal-axis wind turbine, with each blade having a 50 cm span and a 4 cm tip chord length. The blade size and profile are designed based on the idealized Betz limit condition. The material used for manufacturing is a glass fiber reinforced thermoplastic composite system with a polypropylene matrix that melts at 200 °C. Each blade is fabricated in 4 independently manufactured pieces, consisting of top/bottom, and tip/root segments, via a vacuum assisted thermoforming technique. The parts will be assembled afterwards by a joining process, forming the final part for site testing.

scholarly journals Large-scale wind turbine blade design and aerodynamic analysis

2011 ◽  
Vol 57 (5) ◽  
pp. 466-472 ◽  
Author(s):  
TongGuang Wang ◽  
Long Wang ◽  
Wei Zhong ◽  
BoFeng Xu ◽  
Li Chen
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Large Scale ◽  
Wind Turbine Blade ◽  
Blade Design ◽  
Aerodynamic Analysis ◽  
Turbine Blade Design

Application of videometric technique to deformation measurement for large-scale composite wind turbine blade

2012 ◽  
Vol 98 ◽  
pp. 292-300 ◽  
Author(s):  
Jinshui Yang ◽  
Chaoyi Peng ◽  
Jiayu Xiao ◽  
Jingcheng Zeng ◽  
Yun Yuan
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Large Scale ◽  
Wind Turbine Blade ◽  
Deformation Measurement

The Study of the Aerodynamic Force of Wind Turbine Blade by Using FLUENT and MATLAB

2011 ◽  
Vol 225-226 ◽  
pp. 794-797
Author(s):  
He Huang ◽  
Sheng Jun Wu ◽  
Zhuo Qiu Li ◽  
Jin Fan Fei
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Cross Section ◽  
Large Scale ◽  
Aerodynamic Force ◽  
Wind Turbine Blade ◽  
Wind Pressure ◽  
Solid Model ◽  
Blade Surface ◽  
Analytical Work

In this paper, large scale wind turbine blade has been taken for example and two harmful conditions have been chosen as the study targets. Taking a 25 m long wind turbine blade, its solid model is built in CAE. Then take advantage of Computational Fluid Dynamics software-FLUENT to analyze and simulate wind pressure of blade surface acted by aerodynamic force. By means of the numerical method to make curve fitting to bring wind pressure to bear on each cross section of blade accurately, and import it into ANSYS to do further analytical work. It shows that the work should be the firm foundation for further analysis of the wind turbine blade.

An Anthropomorphic Wind Turbine Blade

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Mogeeb A. El-Sheikh
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Large Scale ◽  
Fibonacci Sequence ◽  
Transportation Cost ◽  
Wind Turbine Blade ◽  
The Finite Element Method ◽  
The Road ◽  
Road Design ◽  
Turbine Blade Design

This study presents a new wind turbine blade design for overcoming the restrictions of large-scale wind turbines deployment. The road design, terrain nature, and logistic capabilities represent the main barriers to maneuver blades during a journey to a windy site. The natural finger and the Fibonacci sequence inspired the author to design a new blade that distinguishes with the ability to fold. This study focuses on the aerodynamic design of a 1.5-MW conventional blade and modifies its skin and spar to carry out the aim. The ability to fold enables the blade to maneuver and avoid terrain-road restrictions. The augmented maneuverability of this concept simplifies a route scenario and reduces transportation cost. This study simulates the added attribute and investigates the design modifications effect by using the finite element method.

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