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Lookup NU author(s): Professor Zhiqiang Hu
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
To meet the demand of the development of floating wind turbines, coupled aero-hydro-servo-elasticmethods were developed and then were programmed as an integrated code DARwind (short for DynamicAnalysis for Response of Wind Turbines) for simulating floating wind turbines. This paper firstpresents the theoretical background, including Kane's dynamical equations in combination with theCardan angles method, the hybrid coordinate dynamic analysis method, and the adjacent array approachfor kinematics and kinetics. The blade element/momentum method with aerodynamic corrections wasused for aerodynamic simulation. Potential-flow theory, the second-order wave forces and the Morisonformula with the strip theory were used for hydrodynamics, and a quasi-static mooring modellingapproach was developed for the catenary mooring system. A generator-torque controller and a full-spanrotor-collective blade-pitch controller were adopted for control strategies. The code was then verified bya series of code-to-experiment comparisons, including the mooring system, the structural elasticity, theaerodynamic performance, the hydrodynamic performance and the control strategy. The comparisonsdemonstrated that the coupled aero-hydro-servo-elastic methods have a satisfactory ability to performfully coupled simulations for floating wind turbines.
Author(s): Chen J, Hu Z, Liu G, Wan D
Publication type: Article
Publication status: Published
Journal: Renewable Energy
Print publication date: 01/01/2019
Online publication date: 21/06/2018
Acceptance date: 15/06/2018
Date deposited: 28/06/2018
ISSN (print): 0960-1481
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