Hybrid Model Representation of a TLP Including Flexible Topsides in Non-Linear Regular Waves

Christof Wehmeyer, Francesco Ferri, Morten Thøtt Andersen and Ronnie Refstrup Pedersen
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Christof Wehmeyer: Rambøll Offshore Wind, Esbjerg 6700, Denmark
Francesco Ferri: Department of Civil Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg 9000,Denmark
Morten Thøtt Andersen: Department of Civil Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg 9000,Denmark
Ronnie Refstrup Pedersen: Rambøll Offshore Wind, Esbjerg 6700, Denmark

Energies, 2014, vol. 7, issue 8, 1-18

Abstract: The rising demand for renewable energy solutions is forcing the established industries to expand and continue evolving. For the wind energy sector, the vast resources in deep sea locations have encouraged research towards the installation of turbines in deeper waters. One of the most promising technologies able to solve this challenge is the floating wind turbine foundation. For the ultimate limit state, where higher order wave loads have a significant influence, a design tool that couples non-linear excitations with structural dynamics is required. To properly describe the behavior of such a structure, a numerical model is proposed and validated by physical test results. The model is applied to a case study of a tension leg platform with a flexible topside mimicking the tower and a lumped mass mimicking the rotor-nacelle assembly. The model is additionally compared to current commercial software, where the need for the coupled higher order dynamics proposed in this paper becomes evident.

Keywords: floating wind turbine; TLP; non-linear wave; physical model test; ultimate limit state wave load (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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