Evaluation of the power performance of various wave energy conversion concepts for Faroese coastal waters

Abstract

The Faroe Islands, aim at having all power production based on renewable sources by 2030. Wave power is a natural option, as the islands are situated in one of the world harshest wave climates. Here we investigate the power performance of various wave energy conversion concepts in the coastal Faroese waters. The wave climate around the islands is classified using several years of modelled data from MIKE 21 SW, which has been thoroughly validated by regional and nearshore measured data. Bivariate distributions of modelled significant wave height and peak wave period, at representative nearshore locations, together with the nondimensional power performance, are used to derive the power output from several wave energy conversion concepts. The results show that the waters around the Faroe Islands are well suited for wave energy conversion, although survivability and strong tidal currents might become an issue at some exposed sites.

Ocean Energy Systems Wave Energy Modeling Task 10.4: Benchmark Study of the DTU OWC Chamber with One-Way Absorption

“…Similar to Bingham et al (2015), this is resolved through diffraction calculations in which B 0 77 is iteratively updated based on the computed chamber response, until results converge. For the cases with oneway damping, following Joensen et al (2021), the linearized orifice damping is halved. Viscous losses (e.g., due to friction or sloshing inside the chamber) are not resolved by the potential flow solver, but are instead accounted for by the lid approach described in Pauw et al (2007) and are in the present study tuned for each wave steepness based on the open water response.…”

WCSPH simulation of the forced response of an attenuator oscillating water column wave energy converter

“…It is one of the forty chambers of the KNSwing device (See Fig. 1 a) which is a ship like attenuator type wave energy converter equipped with 20 oscillating water column chambers on each side (Joensen, et al, 2021). The single-chamber device and its placement in the wave flume are shown in Fig.…”

“…The first step in the numerical study of a particular wave energy device is to select the most appropriate numerical scheme for a particular modeling purpose (Folley, 2016). So far, the hydrodynamic wave-OWC interaction problem has been investigated using analytical or different numerical models such as the finite difference method (FDM) (Ketabdari, et al, 2014;Kamath, et al, 2014;Kuo, et al, 2017), boundary element method (BEM) (Lee, et al, 1996;Delaure & Lewis, 2003;Hong, et al, 2004;Josset & Clement, 2007;Bingham, et al, 2015;Bailey, et al, 2016;Wang & Ning, 2020;Joensen, et al, 2021), finite element method (FEM) (Nader, et al, 2012;Teixeira, et al, 2013;Howe & Nader, 2017), finite volume method (FVM) (Conde, et al, 2011;Dai, et al, 2019), the volume of fluid method (VOF) (Bouali & Larbi, 2013;Lopez, et al, 2014;Elhanafi & Kim, 2018;Xu & Huang, 2019). In recent years, particle methods have been also used to study the wave interaction with OWC devices.…”