Dynamic response signatures of a scaled model platform for floating wind turbines in an ocean wave basin

Jaksic, Vesna; O’Shea, Richard; Cahill, Paul; Murphy, Jimmy; Mandic, Danilo P.; Pakrashi, Vikram

doi:10.1098/rsta.2014.0078

Cited by 29 publications

(22 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In all DVV analyses the following parameters were kept constant: embedding dimension m = 3, time lag τ = 1, maximal span parameter n d = 2, number of standardized distances for which target variances are computed N tv = 50, number of surrogates considered N tv = 50 and the number of reference DVs considered N sub = 200. Discussions related to the choice of these parameters and computation of DVV have already been already reported by Jaksic et al [32,34].…”

Section: (D) Numerical Analysismentioning

confidence: 90%

Dynamic response mitigation of floating wind turbine platforms using tuned liquid column dampers

Jaksic

Wright

Murphy

et al. 2015

Phil. Trans. R. Soc. A.

Self Cite

View full text Add to dashboard Cite

In this paper, we experimentally study and compare the effects of three combinations of multiple tuned liquid column dampers (MTLCDs) on the dynamic performance of a model floating tension-leg platform (TLP) structure in a wave basin. The structural stability and safety of the floating structure during operation and maintenance is of concern for the performance of a renewable energy device that it might be supporting. The dynamic responses of the structure should thus be limited for these renewable energy devices to perform as intended. This issue is particularly important during the operation of a TLP in extreme weather conditions. Tuned liquid column dampers (TLCDs) can use the power of sloshing water to reduce surge motions of a floating TLP exposed to wind and waves. This paper demonstrates the potential of MTLCDs in reducing dynamic responses of a scaled TLP model through an experimental study.

show abstract

Section: (D) Numerical Analysismentioning

confidence: 90%

Dynamic response mitigation of floating wind turbine platforms using tuned liquid column dampers

Jaksic

Wright

Murphy

et al. 2015

Phil. Trans. R. Soc. A.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the theme issue, Jaksic et al [62] investigate the use of multiple tuned liquid column dampers (MTLCDs) for dynamic response mitigation in floating wind turbines. Results of experimental tests on a scaled TLP in an ocean wave basin (the same studied in [51]), under waves corresponding to standard sea spectra and a constant top load simulating wind thrust, show that MTLCDs have the potential to reduce tension demand in mooring lines, as well as surge motion. The effectiveness of MTLCDs is corroborated by numerical simulations.…”

Section: Vibration Controlmentioning

confidence: 99%

“…However, accuracy and reliability of joint aerodynamic-hydrodynamic laboratory tests on scaled wind turbines are major challenges, owing essentially to the difficulties of a simultaneous scaling of wind and wave loadings. The theme issue includes two papers, by Matha et al [50] and Jaksic et al [51], presenting experimental results in wave basins.…”

Section: Experimental Analysesmentioning

confidence: 99%

“…The effectiveness of MTLCDs is corroborated by numerical simulations. Finally, the authors show that the DVV method, discussed in [51], may provide output only statistical markers to monitor potential changes in the dynamic behaviour of the system equipped with MTLCDs.…”

Section: Vibration Controlmentioning

confidence: 99%

“…Jaksic et al [51] present an experimental methodology to assess nonlinear signatures of the dynamic response of floating wind turbines. Tests are carried out on a scaled TLP for wind turbines in a wave basin, under wave loading only.…”

Section: Experimental Analysesmentioning

confidence: 99%

See 2 more Smart Citations

New perspectives in offshore wind energy

Failla

Arena

2015

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

The design of offshore wind turbines is one of the most fascinating challenges in renewable energy. Meeting the objective of increasing power production with reduced installation and maintenance costs requires a multi-disciplinary approach, bringing together expertise in different fields of engineering. The purpose of this theme issue is to offer a broad perspective on some crucial aspects of offshore wind turbines design, discussing the state of the art and presenting recent theoretical and experimental studies.

show abstract

A review of modelling techniques for floating offshore wind turbines

et al. 2021

View full text Add to dashboard Cite

Modelling floating offshore wind turbines (FOWTs) is challenging due to the strong coupling between the aerodynamics of the turbine and the hydrodynamics of the floating platform. Physical testing at scale is faced with the additional challenge of the scaling mismatch between Froude number and Reynolds number due to working in the two fluid domains, air and water. In the drive for cost-reduction of floating wind energy, designers may be seeking to move towards high-fidelity numerical modelling as a substitute for physical testing. However, the numerical engineering tools typically used for FOWT modelling are considered as mid-fidelity to low-fidelity tools, and currently lack the level of accuracy required to do so. Furthermore, there is a lack of operational FOWT data available for further development and validation.High-fidelity tools, such as CFD, have greater accuracy but are cumbersome tools and still require validation. Physical scale model testing therefore continues to play an essential role in the development of FOWTs both as a source of validation data for numerical models and as an important development step along the path to commercialization of all platform concepts. The aim of this paper is to provide an overview of both numerical modelling and physical FOWT scale model testing approaches and to provide guidance on the selection of the most appropriate approach (or combination of approaches). The current state-of-the-art will be discussed along with current research trends and areas for further investigation.

show abstract

Dynamic response signatures of a scaled model platform for floating wind turbines in an ocean wave basin

Cited by 29 publications

References 40 publications

Dynamic response mitigation of floating wind turbine platforms using tuned liquid column dampers

Dynamic response mitigation of floating wind turbine platforms using tuned liquid column dampers

New perspectives in offshore wind energy

A review of modelling techniques for floating offshore wind turbines

Contact Info

Product

Resources

About