Aeromechanical analysis of a complete wind turbine using nonlinear frequency domain solution method

Win Naung, Shine; Rahmati, Mohammad; Farokhi, Hamed

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.

• Presentation Conference Type: Conference Paper (published)
• Conference Name: ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition
• Start Date: Sep 21, 2020
• End Date: Sep 25, 2020
• Acceptance Date: Jan 11, 2021
• Online Publication Date: Jan 11, 2021
• Publication Date: Jan 11, 2021
• Deposit Date: Oct 16, 2023
• Volume: 12
• Book Title: Conference Proceeding - Turbo Expo: Power for Land, Sea and Air
• ISBN: 9780791884249
• DOI: https://doi.org/10.1115/GT2020-15705
• Public URL: https://uwe-repository.worktribe.com/output/11181718