Model Scale Analysis of a TLP Floating Offshore Wind Turbine

Zamora-Rodríguez, R.; Gomez-Alonso, Pablo; Amate-Lopez, Juan; De-Diego-Martin, Victor; Dinoi, Pasquale; Simos, Alexandre N.; Souto-Iglesias, Antonio

doi:10.1115/omae2014-24089

Cited by 13 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The TLPWT model used for the testing has been closely based in the NREL concept developed by Matha [9], from an initial investigation from Tracy [27]. This TLPWT concept has been used as a basis for experimental testing, including investigations by Nihei et al [24] and Zamora-Rodriguez et al [34]. The primary motivation behind using a similar hull and turbine arrangement allows for the close comparison of similarities and differences in results from this set of testing to previous experiments.…”

Section: Tlp Model Descriptionmentioning

confidence: 99%

Loads and Response of a Tension Leg Platform Wind Turbine with Non-Rotating Blades: An Experimental Study

Murfet

Abdussamie

2019

JMSE

View full text Add to dashboard Cite

This paper describes model testing of a Tension Leg Platform Wind Turbine (TLPWT) with non-rotating blades to better understand its motion and tendon responses when subjected to combined wind and unidirectional regular wave conditions. The TLPWT structure is closely based on the National Renewable Energy Laboratory (NREL) 5 MW concept. Multiple free decay tests were performed to evaluate the natural periods of the model in the key degrees of freedom, whilst Response Amplitude Operators (RAOs) were derived to show the motion and tendon characteristics. The natural periods in surge and pitch motions evaluated from the decay tests had a relatively close agreement to the theoretical values. Overall, the tested TLPWT model exhibited typical motion responses to that of a generalised TLP with significant surge offsets along with stiff heave and pitch motions. The maximum magnitudes for the RAOs of surge motion and all tendons occurred at the longest wave period of 1.23 s (~13.0 s at full-scale) tested in this study. From the attained results, there was evidence that static wind loading on the turbine structure had some impact on the motions and tendon response, particularly in the heave direction, with an average increase of 13.1% in motion amplitude for the tested wind conditions. The wind had a negligible effect on the surge motion and slightly decreased the tendon tensions in all tendons. The results also showed the set-down magnitudes amounting to approximately 2–5% of the offset. Furthermore, the waves are the dominant factor contributing to the set-down of the TLPWT, with a minimal contribution from the static wind loading. The results of this study could be used for calibrating numerical tools such as CFD codes.

show abstract

Section: Tlp Model Descriptionmentioning

confidence: 99%

Loads and Response of a Tension Leg Platform Wind Turbine with Non-Rotating Blades: An Experimental Study

Murfet

Abdussamie

2019

JMSE

View full text Add to dashboard Cite

show abstract

“…In order to investigate the hydrodynamic performance of a TLP FOWT a test campaign was carried out by CEHINAV-UPM research group for Iberdrola and published by Rodriguez et al (2014) . This concept consisted of a central cylindrical column with four square section horizontal pontoons at its base and each pontoon connected with two tendons to the sea bed.…”

Section: Numerical Studies On Floating Offshore Wind Turbinesmentioning

confidence: 99%

Experimental and numerical analysis of a TLP floating offshore wind turbine

et al. 2018

View full text Add to dashboard Cite

This paper describes an experimental and numerical investigation of the Iberdrola TLP wind turbine concept, TLPWIND, in realistic wind and wave conditions. The TLP was coupled to the NREL 5 MW reference turbine and was designed to operate in a water depth of 70 m. The test campaign included free oscillation tests, tests in regular and irregular waves and simulated wind conditions. A Software-in-the-loop approach was adopted to account for the time-varying aerodynamic forces produced by the turbine during the physical experiments. The effect of wind was found to have a significant contribution to the overall response of the platform whilst variation in wave conditions was found to have a relatively small effect on the platform response. A comparison of results from physical and numerical simulations show that, the numerical predictions from FAST were very close to the results obtained from the experiments in some cases, but in other cases the numerical model failed to accurately predict the platform response. The results from both studies show the benefits of such TLP structures in terms of motions which are vital to obtain a high power output from a floating offshore wind turbine

show abstract

“…Examples in recently published literature include tests in which the unsteady aerodynamic thrust force in a hydrodynamic test is generated by a speed-controlled fan based on measurement of the instantaneous velocity at the nacelle (e.g. Zamora-Rodriguez et al, 2014) or those in which the hydrodynamic motions of a floating platform are simulated in a wind tunnel using a hexapod (Bayati et al, 2014).…”

Section: Physical Modelling Of Rotor Aerodynamicsmentioning

confidence: 99%

Hydrodynamic modelling of marine renewable energy devices: A state of the art review

et al. 2015

View full text Add to dashboard Cite

a b s t r a c tThis paper reviews key issues in the physical and numerical modelling of marine renewable energy systems, including wave energy devices, current turbines, and offshore wind turbines. The paper starts with an overview of the types of devices considered, and introduces some key studies in marine renewable energy modelling research. The development of new International Towing Tank Conference (ITTC) guidelines for model testing these devices is placed in the context of guidelines developed or under development by other international bodies as well as via research projects. Some particular challenges are introduced in the experimental and numerical modelling and testing of these devices, including the simulation of Power-Take-Off systems (PTOs) for physical models of all devices, approaches for numerical modelling of devices, and the correct modelling of wind load on offshore wind turbines. Finally, issues related to the uncertainty in performance prediction from model test results are discussed.

show abstract

Model Scale Analysis of a TLP Floating Offshore Wind Turbine

Cited by 13 publications

References 4 publications

Loads and Response of a Tension Leg Platform Wind Turbine with Non-Rotating Blades: An Experimental Study

Loads and Response of a Tension Leg Platform Wind Turbine with Non-Rotating Blades: An Experimental Study

Experimental and numerical analysis of a TLP floating offshore wind turbine

Hydrodynamic modelling of marine renewable energy devices: A state of the art review

Contact Info

Product

Resources

About