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.

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

scholarly journals Wind Turbine Blade Design Review

2012 ◽  
Vol 36 (4) ◽  
pp. 365-388 ◽  
Author(s):  
P.J. Schubel ◽  
R.J. Crossley
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Blade Design ◽  
Design Review ◽  
Turbine Blade Design

scholarly journals Modal analysis of an iced offshore composite wind turbine blade

2021 ◽  
pp. 0309524X2110116
Author(s):  
Oumnia Lagdani ◽  
Mostapha Tarfaoui ◽  
Mourad Nachtane ◽  
Mourad Trihi ◽  
Houda Laaouidi
Keyword(s):  
Wind Turbine ◽  
Modal Analysis ◽  
Turbine Blade ◽  
Natural Frequencies ◽  
Wind Turbine Blade ◽  
Resonance Phenomenon ◽  
Mode Shapes ◽  
The Finite Element Method ◽  
Numerical Work ◽  
Composite Blades

In the far north, low temperatures and atmospheric icing are a major danger for the safe operation of wind turbines. It can cause several problems in fatigue loads, the balance of the rotor and aerodynamics. With the aim of improving the rigidity of the wind turbine blade, composite materials are currently being used. A numerical work aims to evaluate the effect of ice on composite blades and to determine the most adequate material under icing conditions. Different ice thicknesses are considered in the lower part of the blade. In this paper, modal analysis is performed to obtain the natural frequencies and corresponding mode shapes of the structure. This analysis is elaborated using the finite element method (FEM) computer program through ABAQUS software. The results have laid that the natural frequencies of the blade varied according to the material and thickness of ice and that there is no resonance phenomenon.

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