City Research Online

Abstract

The springing response of a tension-leg-platform wind turbine (TLPWT) excited by the third-harmonic force of an extreme regular wave is investigated using an integrated (aero-hydro-mooring) numerical model developed and presented in this paper. The numerical model comprises a hybrid hydrodynamic model, which employs fully nonlinear potential theory for wave kinematic prediction and non-diffracting potential theory for wave force prediction, to simulate extreme wave and predict associated wave forces accurately and efficiently. Numerical simulations are carried out for the interaction of a floating TLPWT with waves. The focus is on the TLPWT motions, principally excited by the higher-order harmonic wave forces. In particular, the springing response at the triple wave frequency of a regular wave is investigated, together with the wind turbine response and the tensions in the mooring lines.

Publication Type:	Article
Additional Information:	Copyright © by The International Society of Offshore and Polar Engineers
Publisher Keywords:	Fully nonlinear potential theory, springing, tension-leg- platform wind turbine, third-harmonic force
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Departments:	School of Science & Technology > Engineering

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