Reliability study of a fully-passive oscillating foil turbine operating in a periodically-perturbed inflow

Oshkai, Peter; Iverson, Dylan; Lee, Waltfred; Dumas, Guy

doi:10.1016/j.jfluidstructs.2022.103630

Cited by 7 publications

(1 citation statement)

References 24 publications

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“…While a plethora of research has been conducted for active energy harvesting flapping foils under more realistic conditions, not so much has been conducted for fully passive flapping foils. The effects of flow perturbation by other flapping foils upstream in [14]. Additionally, in [15], feedback control was added to the flapping foil system, leading to operation of the system in the dynamic stall regime.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Submergence Depth and Wave-Induced Effects on the Performance of a Fully Passive Energy Harvesting Flapping Foil Operating Beneath the Free Surface

Petikidis,

Papadakis

2023

JMSE

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This paper investigates the performance of a fully passive flapping foil device for energy harvesting in a free surface flow. The study uses numerical simulations to examine the effects of varying submergence depths and the impact of monochromatic waves on the foil’s performance. For the numerical simulations, a in-house artificial compressibility two-phase solver is employed and coupled with a rigid body dynamic solver. The results show that the fully passive flapping foil device can achieve high efficiency for submergence depths between 4 and 9 chords, with an “optimum” submergence depth where the flapping foil performance is maximised. The effects of regular waves on the foil’s performance were also investigated, showing that waves with a frequency close to that of the natural frequency of the flapping foil-aided energy harvesting. Overall, this study provides insights that could be useful for future design improvements for fully passive flapping foil devices for energy harvesting operating near the free surface.

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Section: Introductionmentioning

confidence: 99%

Investigation of Submergence Depth and Wave-Induced Effects on the Performance of a Fully Passive Energy Harvesting Flapping Foil Operating Beneath the Free Surface

Petikidis,

Papadakis

2023

JMSE

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Nonlinear response of passively flapping foils

et al. 2022

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Prediction of energy harvesting efficiency through a wake–foil interaction model for oscillating foil arrays

Ribeiro,

Franck

2024

J. Fluid Mech.

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This research investigates the wake–foil interactions between two oscillating foils in a tandem configuration undergoing energy harvesting kinematics. Oscillating foils have been shown to extract hydrokinetic energy from free-stream flows through a combination of periodic heave and pitch motions, at relatively higher amplitudes and lower reduced frequency than thrust generating foils. When placed in tandem, the wake–foil interactions can govern the energy harvesting efficiency of the system due to a reduced relative flow velocity in combination with a structured and coherent wake of vortices shed from the high amplitude flapping of upstream foils. This work utilizes simulations of two tandem foils to parameterize and model the energy harvesting performance as a function of array configuration and foil kinematics. Once the wake of the leading foil has been fully parameterized, the placement, phase angle and kinematic stroke of the second foil is utilized to estimate the time-dependent power curve. The algorithm predicts the power of the second foil through the mean and unsteady wake characteristics, including the direct impingement of a vortex with the trailing foil.

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Reliability study of a fully-passive oscillating foil turbine operating in a periodically-perturbed inflow

Cited by 7 publications

References 24 publications

Investigation of Submergence Depth and Wave-Induced Effects on the Performance of a Fully Passive Energy Harvesting Flapping Foil Operating Beneath the Free Surface

Investigation of Submergence Depth and Wave-Induced Effects on the Performance of a Fully Passive Energy Harvesting Flapping Foil Operating Beneath the Free Surface

Nonlinear response of passively flapping foils

Prediction of energy harvesting efficiency through a wake–foil interaction model for oscillating foil arrays

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