An investigation of the wake recovery of two model horizontal-axis tidal stream turbines measured in a laboratory flume with Particle Image Velocimetry

Simmons, S.; McLelland, Stuart J.; Parsons, D.; Jordan, Laura-Beth; Murphy, Brendan; Murdoch, L.

doi:10.1016/j.jher.2017.03.003

Cited by 4 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These measure single points in the flow field, and often several instruments will be used. Particle Image Velocimetry (PIV) has also been used more recently [34], [35], [39], [40]. One key advantage of this over ADV and LDV methods is better measurement of large turbulence.…”

Section: E Measurement Techniquesmentioning

confidence: 99%

Review of tidal turbine wake modelling methods

Jump

Macleod

Wills³

2020

Int. J. Mar. Ene.

View full text Add to dashboard Cite

Enabling Future Arrays in Tidal (EnFAIT) is an EU Horizon 2020 flagship tidal energy project. It aims to demonstrate the development, operation and decommissioning of the world’s largest tidal array (six turbines), over a five-year period, to prove a cost reduction pathway for tidal energy and confirm that it can be cost competitive with other forms of renewable energy. To determine the optimal site layout and spacing between turbines within a tidal array, it is essential to accurately characterise tidal turbine wakes and their effects. This paper presents a state-of-the-art review of tidal turbine wake modelling methods, with an overview of the relevant fundamental theories. Numerical and physical modelling research completed by both academia and industry are considered to provide an overview of the contemporary understanding in this area. The scalability of single device modelling techniques to an array situation is discussed, particularly with respect to wake interactions.

show abstract

Section: E Measurement Techniquesmentioning

confidence: 99%

Review of tidal turbine wake modelling methods

Jump

Macleod

Wills³

2020

Int. J. Mar. Ene.

View full text Add to dashboard Cite

show abstract

“…The turbine is assumed to be a constant speed device with fixed blade pitch of 4 • . Additional details on the turbine are reported in the study and supplemental data by Simmons et al, 2018. The turbine was mounted on an 8 mm diameter shaft which was attached to a 32 mm diameter housing for a 25 W DC motor.…”

Section: Scaled Hydrokinetic Turbinementioning

confidence: 99%

“…Characterising turbine wakes has relied on laboratory experiments (e.g., Myers and Bahaj, 2010;Stallard et al, 2015;Tedds et al, 2014;Stallard et al, 2015) and numerical modelling using computational fluid dynamics (e.g., Harrison et al, 2010;Daly et al, 2013;Batten et al, 2013). These studies have evolved from experiments with actuator disks (e.g., Myers and Bahaj, 2010) to experiments with multiple three-bladed turbines (e.g., Stallard et al, 2013), experiments with turbines interacting with a bottom boundary layer (e.g., Stallard et al, 2015;Möller et al, 2016;Simmons et al, 2018), and experiments including mobile sediment beds (e.g., Hill et al, 2014Hill et al, , 2016Ramírez-Mendoza et al, 2018). Computational fluid dynamics models have been applied to the study of TSTs from the use of homogeneous flows (e.g., Mason-Jones et al, 2013) to the inclusion of vertical profiles and waves (e.g., Tatum et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Asymmetric effects of a modelled tidal turbine on the flow and seabed

Ramírez-Mendoza

Murdoch²,

Jordan³

et al. 2020

Renewable Energy

View full text Add to dashboard Cite

The extraction of power from the flow of water has become an important potential source of clean energy. In spite of significant interest in the interaction between energy extraction devices and water currents, comparatively little work has focused on flow asymmetry. Indeed, unusual wake behaviour and limits of turbine array efficiency have typically been attributed to boundary effects rather than the particular turbine geometry. The aim of the present study was to reveal the asymmetries in the hydrodynamic wake and the interactions with the sediment bed due to the presence of a hydrokinetic turbine. We combined:(i) computational fluid dynamics simulations; (ii) optical flow measurements from a series of flume experiments above a fixed rough bed; and (iii) acoustic measurements from a further series of flume experiments above a mobile sand bed. Results showed flow asymmetry due to the presence of the rotor which appeared to be related to the development of the wake and potentially to the gyre of the blades. Suspended sediments in the flume also exhibited asymmetrical characteristics due to the flow asymmetry. This imbalance in the flow field and sediment transport may decrease energy extraction efficiency in turbine arrays and also could have important environmental consequences.

show abstract

Coupled BEM and two-phase mixture model for surrounding flow of horizontal axial turbine over sediment seabed

Chen²

2022

Ocean Engineering

View full text Add to dashboard Cite

An investigation of the wake recovery of two model horizontal-axis tidal stream turbines measured in a laboratory flume with Particle Image Velocimetry

Cited by 4 publications

References 15 publications

Review of tidal turbine wake modelling methods

Review of tidal turbine wake modelling methods

Asymmetric effects of a modelled tidal turbine on the flow and seabed

Coupled BEM and two-phase mixture model for surrounding flow of horizontal axial turbine over sediment seabed

Contact Info

Product

Resources

About