Performance assessment of a vertical axis turbine in a marine current flume tank and CFD modelling

Rolland, S.; Thatcher, M.; Ellis, Robert; Gaurier, Benoît; Croft, Nick; Cross, M.

doi:10.1016/j.ijome.2015.05.003

Cited by 5 publications

(5 citation statements)

References 16 publications

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“…Buchner et al 171 compared their SST simulation results of blade dynamic stall with the SPIV measurement, which showed good agreement. The application of PIV for VAWT research is not confined to wind tunnels and Rolland et al 172 performed a PIV study about a small VAWT in a marine current flume tank and their CFD model using (SST) turbulence model successfully captured the physics of the flow. Hohman et al 173 employed the SPIV to investigate the effect of inflow conditions on the turbine wake behaviour, finding that the inflow turbulence did not significantly affect the overall wake structure.…”

Section: D and 3d Optical Measurementsmentioning

confidence: 99%

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A review of H-Darrieus wind turbine aerodynamic research

Ingram

Dominy

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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The H-Darrieus vertical axis turbine is one of the most promising wind energy converters for locations where there are rapid variations of wind direction, such as in the built environment. The most challenging considerations when employing one of these usually small machines are to ensure that they self-start and to maintain and improve their efficiency. However, due to the turbine's rotation about a vertical axis, the aerodynamics of the turbine are more complex than a comparable horizontal axis wind turbine and our knowledge and understanding of these turbines falls remains far from complete. This paper provides a detailed review of past and current studies of the H-Darrieus turbine from the perspective of design parameters including turbine solidity, blade profile, pitch angle, etc. and particular focus is put on the crucial challenge to design a turbine that will self-start. Moreover, this paper summarizes the main research approaches for studying the turbine in order to identify successes and promising areas for future study.

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Section: D and 3d Optical Measurementsmentioning

confidence: 99%

“…The application of PIV for VAWT research is not confined to wind tunnels and Rolland et al. 172 performed a PIV study about a small VAWT in a marine current flume tank and their CFD model using k-ω (SST) turbulence model successfully captured the physics of the flow. Hohman et al.…”

Section: H-darrieus Turbine Research Approachesmentioning

confidence: 99%

A review of H-Darrieus wind turbine aerodynamic research

Ingram

Dominy

2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…While horizontal and vertical axis tidal turbines' wakes have been already studied [4,15,17,25] and their interaction effects well-known [16,2], no measurement has been done on an undulating tidal energy converter. Indeed, the tidal energy converter studied here is based on the fluid-structure interactions that occur between a flexible membrane and an axial flow, resulting in an undulating motion that can be used to harvest energy.…”

Section: Introductionmentioning

confidence: 99%

Wake characterization of an undulating membrane tidal energy converter

Träsch

Déporte²,

Delacroix³

et al. 2020

Applied Ocean Research

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Most of the research done on tidal energy focuses on marine current turbines. Therefore, tidal turbine's wake is well-documented. The tidal energy converter studied here is based on the fluid-structure interactions that occur between a flexible membrane and an axial flow, resulting in an undulating motion that can be used to harvest energy. This device's performance had been studied but it is the first time its wake is experimentally characterized from two-dimensional Particle Image Velocimetry (PIV) measurements. PIV is synchronized with a motion tracking system that gives information on trajectory and power conversion. Wake measurement gives access to velocity deficit, turbulence intensity and vorticity. Three configurations are tested in order to identify the influence of the main adjustment parameters. Pre-stress increases the membrane vertical speed, leading to a more important vertical expansion of the wake. The power extraction slows down the membrane's motion, thus limiting the wake's length and intensity. The flume tank measurements suggest that the best location for a downstream device in a tidal farm would be in the same horizontal position, at 5 membrane's length. In the open sea, the membrane interaction effects should not predominant. Highlights► Undulating membrane first wake characterization from PIV measurements, ► Phase-averaged velocity deficit and vorticity are measured and presented, ► Vorticity dissipation rate result can be used to calibrate numerical model.

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“…For flow field measurements, the PIV method was usually used to compare with the calculation results [66,67]. Rolland et al [68] measured the velocity field by illuminating the seeded particles and storing the camera images to calculate the particle displacement between two successive images by using a cross-correlation algorithm. The experimental cross section size was 1450 mm × 1450 mm, and the incoming flow velocity was 1 or 1.5 m/s.…”

Section: Experimental Methodsmentioning

confidence: 99%

A Review: Design and Optimization Approaches of the Darrieus Water Turbine

Tan

et al. 2023

Sustainability

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As the use of Darrieus turbines in water is becoming increasingly popular in the field of renewable energy, it is essential to explore and evaluate existing research efforts. The situation of the Darrieus water turbine in water still requires further discussion. This paper aims to provide a comprehensive review of optimization methods for Darrieus water turbines, addressing the challenges associated with their efficiency, start-up, and stability. This work summarizes and evaluates the findings of previous studies, focusing on the features of experimental and numerical methods. Influence of geometric parameters, including height-diameter ratio, solidity, torsional angle, and airfoil are also talked into. The existing research adopts solidity values ranging from 0.1 to 0.4, but the design experience is not as extensive as that of the Darrieus wind turbine. Further discussions are still needed on the optimal power coefficient and tip speed ratio of the Darrieus water turbine. The research with a power coefficient ranging from about zero to above the Betz limit needs further summarization. Various optimization strategies, such as multi-turbine arrangement, coupling with Savonius turbines, and blade pitching, are also discussed. By offering insights into the current state of optimization works for Darrieus water turbines, this review aims to facilitate future research, bridge existing gaps in the field, further enrich the utilization of ocean currents, and improve the structure of renewable energy.

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Performance assessment of a vertical axis turbine in a marine current flume tank and CFD modelling

Cited by 5 publications

References 16 publications

A review of H-Darrieus wind turbine aerodynamic research

A review of H-Darrieus wind turbine aerodynamic research

Wake characterization of an undulating membrane tidal energy converter

A Review: Design and Optimization Approaches of the Darrieus Water Turbine

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