Numerical investigation of a dual cylindrical OWC hybrid system incorporated into a fixed caisson breakwater

Yang, Can; Xu, Tao; Wan, Chang; Liu, Hengxu; Su, Zuohang; Zhao, Lujun; Chen, Hailong; Johanning, Lars

doi:10.1016/j.energy.2022.126132

Cited by 4 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the comparison between the results of a single-and a dual-chamber OWC, it was found that the effective frequency bandwidth of the dual-chamber device was broader than that of the single-chamber OWC. A hybrid oscillating water column-oscillating buoy wave energy converter was examined in [47][48][49]. The WEC consisted of an OWC and an oscillating buoy, which was attached to the outer wall of the converter.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hydrodynamics on the Power Efficiency of a Toroidal Oscillating Water Column Device

Konispoliatis

2023

Sustainability

View full text Add to dashboard Cite

This study tries to identify the effect of hydrodynamics on the absorbed wave power using a toroidal Oscillating Water Column (OWC) device. To this end, the fundamental hydrodynamic boundary value problem for an arbitrary shaped toroidal OWC device of revolution with vertical axis is solved. The described method is based on the discretization of the flow field around the device by means of ring-shaped macro-elements, in each of which axisymmetric eigenfunction expansions for the velocity potential is made. The solution sought for the corresponding diffraction and radiation velocity potentials is achieved using Galerkin’s method. The applied formulation is generic and can be employed for arbitrary configurations of toroidal OWCs. Therefore, the numerical results shown and discussed in the present paper, in terms of the hydrodynamic loads and the air volume flows inside the OWC chamber, concern different types of OWCs. From the present analysis, it is demonstrated that the absorbed wave power by the examined toroidal devices is strongly affected by the geometrical parameters of the device; thus, these should be properly considered towards the maximization of the device’s wave power efficiency.

show abstract

Section: Introductionmentioning

confidence: 99%