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

Xin Cai, Pan Pan, Jie Zhu and Rongrong Gu
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Xin Cai: College of Mechanics and Materials, Hohai University, Nanjing 210098, China
Pan Pan: College of Mechanics and Materials, Hohai University, Nanjing 210098, China
Jie Zhu: College of Mechanics and Materials, Hohai University, Nanjing 210098, China
Rongrong Gu: College of Mechanics and Materials, Hohai University, Nanjing 210098, China

Energies, 2013, vol. 6, issue 7, 1-15

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 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2013
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