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Research Papers: Gas Turbines: Turbomachinery

Analysis of Nonlinear Dynamic Response of Wind Turbine Blade Under Fluid–Structure Interaction and Turbulence Effect

[+] Author and Article Information
Jianping Zhang

College of Energy and Mechanical Engineering,
Shanghai University of Electric Power,
2103 Pingliang Road,
Shanghai 200090, China
e-mail: jpzhanglzu@163.com

Kaige Zhang

College of Energy and Mechanical Engineering,
Shanghai University of Electric Power,
2103 Pingliang Road,
Shanghai 200090, China
e-mail: zkgshdl@163.com

Aixi Zhou

Department of Engineering Technology and
Construction Management,
University of North Carolina at Charlotte,
9201 University City Blvd,
Charlotte, NC 28223
e-mail: aixi.zhou@uncc.edu

Tingjun Zhou

College of Energy and Mechanical Engineering,
Shanghai University of Electric Power,
2103 Pingliang Road,
Shanghai 200090, China
e-mail: tingjun1216@126.com

Danmei Hu

College of Energy and Mechanical Engineering,
Shanghai University of Electric Power,
2103 Pingliang Road,
Shanghai 200090, China
e-mail: hudanmei@shiep.edu.cn

Jianxing Ren

College of Energy and Mechanical Engineering,
Shanghai University of Electric Power,
2103 Pingliang Road,
Shanghai 200090, China
e-mail: ren608@163.com

Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received April 10, 2014; final manuscript received June 15, 2014; published online July 22, 2014. Editor: David Wisler.

J. Eng. Gas Turbines Power 136(10), 102604 (Jul 22, 2014) (5 pages) Paper No: GTP-14-1194; doi: 10.1115/1.4027965 History: Received April 10, 2014; Revised June 15, 2014

In this paper, the entity model of a 1.5 MW offshore wind turbine blade was built by Pro/Engineer software. Fluid flow control equations described by arbitrary Lagrange–Euler (ALE) were established, and the theoretical model of geometrically nonlinear vibration characteristics under fluid–structure interaction (FSI) was given. The simulation of offshore turbulent wind speed was achieved by programming in Matlab. The brandish displacement, the Mises stress distribution and nonlinear dynamic response curves were obtained. Furthermore, the influence of turbulence and FSI on blade dynamic characteristics was studied. The results show that the response curves of maximum brandish displacement and maximum Mises stress present the attenuation trends. The region of the maximum displacement and maximum stress and their variations at different blade positions are revealed. It was shown that the contribution of turbulence effect (TE) on displacement and stress is smaller than that of the FSI effect, and its extent of contribution is related to the relative span length. In addition, it was concluded that the simulation considering bidirectional FSI (BFSI) can reflect the vibration characteristics of wind turbine blades more accurately.

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References

Figures

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Fig. 1

Fluctuating wind velocity versus time at 20 m/s

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Fig. 2

The solving diagram under BFSI algorithm

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Fig. 3

The entity model of 1.5 MW wind blade

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Fig. 4

Maximum Mises stress contour

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Fig. 5

Response curves under three conditions: (a) maximum displacement and (b) maximum Mises stress

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Fig. 6

The displacement distribution under TE & BFSI at 1.3 s

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Fig. 7

The variation curves of the displacement along the span direction under three conditions

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Fig. 8

The Mises stress distribution under TE & BFSI

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Fig. 9

The change curves of Mises stress along the span direction under three conditions

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