Modelling of oscillating foil propulsors in waves

Lopes, D.B.S.; Vaz, Guilherme; Campos, J. A. C. Falcão de; Sarmento, A.J.N.A.

doi:10.1016/j.oceaneng.2022.113316

Cited by 3 publications

(4 citation statements)

References 25 publications

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“…The study focuses on 2D approach with heave and pitch degrees of freedom. The dynamics system is modelled using Equation (20).…”

Section: Fluid Structure Interactionmentioning

confidence: 99%

“…The vector F tot = (F 2 , M 3 ) includes the total excitation forces and moments of the system. The excitation forces and moments of the system are the integrated pressure and viscous forces over the wall boundary, given in (20), where r is the respective lever arm from the device's center of gravity.…”

Section: Fluid Structure Interactionmentioning

confidence: 99%

“…where p and τ are the pressure and shear stress acting on the body, n and n y tangential and vertical unit vectors and r the moment lever. In FSI problems, the non-linear Equation (20) needs to be linearized to be solved iteratively. This linearization is performed during the pseudo-timesteps, and it allows the system to be solved more efficiently.…”

Section: Fluid Structure Interactionmentioning

confidence: 99%

“…Efficiency was higher when a flexible foil was used, but was not affected that greatly, in general. An investigation into 3D effects and free surface wave patterns was carried out by [20]. In [21], they studied thrust producing flapping foils in waves, for constant submergence depth and wave heights using a boundary element method.…”

Section: Introductionmentioning

confidence: 99%

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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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“…The study focuses on 2D approach with heave and pitch degrees of freedom. The dynamics system is modelled using Equation (20).…”

Section: Fluid Structure Interactionmentioning

confidence: 99%

Section: Fluid Structure Interactionmentioning

confidence: 99%

Section: Fluid Structure Interactionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations