Model Test of a 1:8-Scale Floating Wind Turbine Offshore in the Gulf of Maine1

Viselli, Anthony M.; Goupee, Andrew J.; Dagher, Habib J.

doi:10.1115/1.4030381

Cited by 63 publications

(25 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the DeepCLiDAR successfully collected wave, current, temperature, pressure, surface wind speed, and wind speeds from 40 to 200 m in support of the UMaine VolturnUS 1:8 floating turbine testing program. 26 Figure 8 shows the DeepCLiDAR deployed off Castine, Maine with buoy in the foreground.…”

Section: Phase II Resultsmentioning

confidence: 99%

Validation of the first LiDAR wind resource assessment buoy system offshore the Northeast United States

Viselli

Filippelli²,

Pettigrew

et al. 2019

Wind Energy

View full text Add to dashboard Cite

The US offshore wind industry is maturing with several projects in various stages of development. These projects require site wind and environmental data before and during operation. Conventional techniques such as fixed‐bottom meteorological towers present economical and permitting challenges for the US. Floating Light Detection and Ranging (LiDAR) buoys offer significant advantages including reduced costs, less permitting, and reusability. This paper presents the validation of the first floating LiDAR buoy in Northeast US waters. The buoy, named DeepCLiDAR, includes a LiDAR, ecological monitoring sensors, and metocean sensors. A three‐phase LiDAR validation plan was executed, and its results are presented. The objective of the validation plan was to verify the accuracy of measurements made by the LiDAR buoy in wave environments against an unmoving reference wind measurement. Due to a lack of reference met masts, the use of a LiDAR on land as a baseline reference was implemented for validation. Comparison to a reference LiDAR instead of a traditional meteorological tower was a unique approach required in the Northeast US waters due to the absence of a reference fixed‐bottom meteorological tower in the region at the time of this study. The testing included a comparison of wind speed measurements made by the buoy deployed 15 km offshore from the mainland and a land‐based reference LiDAR located on a nearby island. This paper presents the methodology and results of this program, which indicate favorable agreement. This was the first such validation program in the Northeast USA which is now seeing rapid development of offshore wind.

show abstract

Section: Phase II Resultsmentioning

confidence: 99%

Validation of the first LiDAR wind resource assessment buoy system offshore the Northeast United States

Viselli

Filippelli²,

Pettigrew

et al. 2019

Wind Energy

View full text Add to dashboard Cite

show abstract

“…The first demonstration of semi-submersible concepts are Principle Power (WindFloat) [1] and Fukushima FORWARD [2]. There are also several semi-submersible model designs [3][4][5][6][7]. The TLP concept is stabilized by a high-tension mooring system; for this reason, the anchor system for TLP is complex [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A New Conceptual Design and Dynamic Analysis of a Spar-Type Offshore Wind Turbine Combined with a Moonpool

Pham

Shin

2019

Energies

View full text Add to dashboard Cite

Floating offshore wind turbines promise to provide an abundant source of energy. Currently, much attention is being paid to the efficient performance and the economics of floating wind systems. This paper aims to develop a spar-type platform to support a 5-MW reference wind turbine at a water depth of 150 m. The spar-type platform includes a moonpool at the center. The design optimization process is composed of three steps; the first step uses a spreadsheet to calculate the platform dimensions; the second step is a frequency domain analysis of the responses in wave conditions; and the final step is a fully coupled simulation time domain analysis to obtain the dynamic responses in combined wind, wave, and current conditions. By having a water column inside the open moonpool, the system’s dynamic responses to horizontal and rotating motions are significantly reduced. Reduction of these motions leads to a reduction in the nacelle acceleration and tower base bending moment. On the basic of optimization processes, a spar-type platform combined with a moonpool is suggested, which has good performance in both operational conditions and extreme conditions.

show abstract

“…Besides, the experimental tests in wave basin facilities using various scale models were carried out to verify the numerical simulation results and study the coupled aero-hydrodynamic performance of different FOWT designs [32][33][34][35][36]. Several intermediate-scale FOWT models were also deployed on the ocean coast to meet the requirement of full-sized construction of commercial-scale projects [37].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Interference Effects Between Wind Turbine and Spar-Type Floating Platform Under Combined Wind-Wave Excitation

Huang

Wan

2019

Sustainability

View full text Add to dashboard Cite

In order to further understand the coupled aero-hydrodynamic performance of the floating offshore wind turbine (FOWT) in realistic ocean environment, it is necessary to investigate the interference effects between the unsteady aerodynamics of the wind turbine and different degree-of-freedom (DOF) platform motions under combined wind-wave excitation. In this paper, a validated CFD analysis tool FOWT-UALM-SJTU with modified actuator line model is applied for the coupled aero-hydrodynamic simulations of a spar-type FOWT system. The aero-hydrodynamic characteristics of the FOWT with various platform motion modes and different wind turbine states are compared and analyzed to explore the influence of the interference effects between the wind turbine and the floating platform on the performance of the FOWT. The dynamic responses of local relative wind speed and local attack angle at the blade section and wind-wave forces acting on the floating platform are discussed in detail to reveal the interaction mechanism between the aerodynamic loads and different DOF platform motions. It is shown that the surge motion and the pitch motion of the floating platform both significantly alter the local attack angle, while only the platform pitch motion have significant impacts on the local relative wind speed experienced by the rotating blades. Besides, the shaft tilt and the pro-cone angle of the wind turbine and the height-dependent wind speed all contribute to the variation of the local attack angle. The coupling between the platform motions along different DOFs is obviously amplified by the aerodynamic forces derived from the wind turbine. In addition, the wake deflection phenomenon is clearly observed in the near wake region when platform pitch motion is considered. The dynamic pitch motion of the floating platform also contributes to the severe wake velocity deficit and the increased wake width.

show abstract

Model Test of a 1:8-Scale Floating Wind Turbine Offshore in the Gulf of Maine1

Cited by 63 publications

References 11 publications

Validation of the first LiDAR wind resource assessment buoy system offshore the Northeast United States

Validation of the first LiDAR wind resource assessment buoy system offshore the Northeast United States

A New Conceptual Design and Dynamic Analysis of a Spar-Type Offshore Wind Turbine Combined with a Moonpool

Investigation of Interference Effects Between Wind Turbine and Spar-Type Floating Platform Under Combined Wind-Wave Excitation

Contact Info

Product

Resources

About