Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Naung, Shine Win, Rahmati, Mohammad and Farokhi, Hamed (2020) Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method. Journal of Engineering for Gas Turbines and Power. ISSN 0742-4795 (In Press)

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Official URL: https://doi.org/10.1115/1.4049206

Abstract

The high-fidelity computational fluid dynamics (CFD) simulations of a complete wind turbine model usually require significant computational resources. It will require much more resources if the fluid-structure interactions between the blade and the flow are considered, and it has been the major challenge in the industry. The aeromechanical analysis of a complete wind turbine model using a high-fidelity CFD method is discussed in this paper. The distinctiveness of this paper is the application of the nonlinear frequency domain solution method to analyse the forced response and flutter instability of the blade as well as to investigate the unsteady flow field across the wind turbine rotor and the tower. This method also enables the aeromechanical simulations of wind turbines for various inter blade phase angles in a combination with a phase shift solution method. Extensive validations of the nonlinear frequency domain solution method against the conventional time domain solution method reveal that the proposed frequency domain solution method can reduce the computational cost by one to two orders of magnitude.

Item Type: Article
Uncontrolled Keywords: Wind turbines, Blades, Computational fluid dynamics, Engineering simulation, Simulation, Flow (Dynamics), Fluid structure interaction, Flutter (Aerodynamics), Phase shift, Rotors, Unsteady flow
Subjects: H100 General Engineering
H300 Mechanical Engineering
H700 Production and Manufacturing Engineering
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Rachel Branson
Date Deposited: 02 Dec 2020 11:40
Last Modified: 07 Dec 2020 14:45
URI: http://nrl.northumbria.ac.uk/id/eprint/44895

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