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Energies 2013, 6(7), 3134-3148; doi:10.3390/en6073134

The Analysis of the Aerodynamic Character and Structural Response of Large-Scale Wind Turbine Blades

1
College of Mechanics and Materials, Hohai University, Nanjing 210098, China
2
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
*
Author to whom correspondence should be addressed.
Received: 22 April 2013 / Revised: 20 June 2013 / Accepted: 20 June 2013 / Published: 27 June 2013
(This article belongs to the Special Issue Wind Turbines 2013)
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Abstract

A process of detailed CFD and structural numerical simulations of the 1.5 MW horizontal axis wind turbine (HAWT) blade is present. The main goal is to help advance the use of computer-aided simulation methods in the field of design and development of HAWT-blades. After an in-depth study of the aerodynamic configuration and materials of the blade, 3-D mapping software is utilized to reconstruct the high fidelity geometry, and then the geometry is imported into CFD and structure finite element analysis (FEA) software for completely simulation calculation. This research process shows that the CFD results compare well with the professional wind turbine design and certification software, GH-Bladed. Also, the modal analysis with finite element method (FEM) predicts well compared with experiment tests on a stationary blade. For extreme wind loads case that by considering a 50-year extreme gust simulated in CFD are unidirectional coupled to the FE-model, the results indicate that the maximum deflection of the blade tip is less than the distance between the blade tip (the point of maximum deflection) and the tower, the material of the blade provides enough resistance to the peak stresses the occur at the conjunction of shear webs and center spar cap. Buckling analysis is also included in the study.
Keywords: rotational effect; fluid structure interaction; eigenbuckling; Mieses stress rotational effect; fluid structure interaction; eigenbuckling; Mieses stress
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Cai, X.; Pan, P.; Zhu, J.; Gu, R. The Analysis of the Aerodynamic Character and Structural Response of Large-Scale Wind Turbine Blades. Energies 2013, 6, 3134-3148.

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