Numerical study of the dynamic response of a wind turbine on a tension leg platform with a coupled partitioned six degree-of-freedom rigid body motion solver
Author
Chow, Jeng Hei
Ng, Eddie Yin Kwee
Srikanth, Narasimalu
Date of Issue
2018School
School of Mechanical and Aerospace Engineering
Research Centre
Energy Research Institute @NTU
Related Organization
Renewables & Low Carbon Generation (Wind & Marine)
Version
Published version
Abstract
In assessment of the response of floating wind turbines under extreme wave conditions, structure stability and survivability is of utmost importance in the design and implementation. The experimental upwind horizontal axis floating wind turbine on a tension leg platform (TLP) setup was validated with the strongly coupled partitioned six degree-of-freedom rigid body motion solver (Chow and Ng 2016). After tuning of the unknown variables such as the tendon stiffness and damping coefficients with the decay tests, the system ran with the coupled fluid-motion numerical solver resulted in accurate estimations of the natural frequencies and damping ratios. Together with a modified restrain system to model the tendons, the response of the floating wind turbine under regular and focused waves simulations were found to be well-predicted. A stability analysis was performed to determine the iterations that should be ran every time step. The median of the time steps converged within 8.7 iterations.
Subject
Computational Fluid Dynamics
OpenFOAM
Engineering::Mechanical engineering
OpenFOAM
Engineering::Mechanical engineering
Type
Journal Article
Series/Journal Title
Ocean Engineering
Rights
© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).
Collections
http://dx.doi.org/10.1016/j.oceaneng.2018.12.040
Get published version (via Digital Object Identifier)