scholarly journals Nonlinear wave loads on an offshore oscillating-water-column wave energy converter array

2022 ◽  
Vol 118 ◽  
pp. 103003
Author(s):  
Yu Zhou ◽  
Dezhi Ning ◽  
Dongfang Liang ◽  
Dongsheng Qiao
Keyword(s):  
Water Column ◽  
Nonlinear Wave ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Wave Loads ◽  
Oscillating Water Column ◽  
Energy Converter

Nonlinear wave loads on a stationary cylindrical-type oscillating water column wave energy converter

2021 ◽  
Vol 236 ◽  
pp. 109481
Author(s):  
Yu Zhou ◽  
Dezhi Ning ◽  
Lifen Chen ◽  
Chongwei Zhang ◽  
Lin Lin ◽  
...  
Keyword(s):  
Water Column ◽  
Nonlinear Wave ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Wave Loads ◽  
Oscillating Water Column ◽  
Energy Converter

Unveiling the potential of using a spar-buoy oscillating-water-column wave energy converter for low-power stand-alone applications

2021 ◽  
Vol 292 ◽  
pp. 116835
Author(s):  
Charikleia L.G. Oikonomou ◽  
Rui P.F. Gomes ◽  
Luís M.C. Gato
Keyword(s):  
Low Power ◽  
Water Column ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Oscillating Water Column ◽  
Energy Converter

An experimental and numerical analysis of an I-beam attenuator-type, oscillating water column wave energy converter

2015 ◽  
pp. 437-443
Author(s):  
Harry Bingham ◽  
Robert Read ◽  
Frederik Jakobsen ◽  
Morten Simonsen ◽  
Pablo Guillen ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Water Column ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Oscillating Water Column ◽  
Energy Converter

scholarly journals Geometric Analysis through the Constructal Design of a Sea Wave Energy Converter with Several Coupled Hydropneumatic Chambers Considering the Oscillating Water Column Operating Principle

2021 ◽  
Vol 11 (18) ◽  
pp. 8630
Author(s):  
Yuri Theodoro Barbosa de Lima ◽  
Mateus das Neves Gomes ◽  
Liércio André Isoldi ◽  
Elizaldo Domingues dos Santos ◽  
Giulio Lorenzini ◽  
...  
Keyword(s):  
Water Column ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Wave Energy ◽  
Performance Indicator ◽  
Wave Energy Converter ◽  
Oscillating Water Column ◽  
Energy Converter ◽  
Constructal Design

The work presents a numerical study of a wave energy converter (WEC) device based on the oscillating water column (OWC) operating principle with a variation of one to five coupled chambers. The main objective is to evaluate the influence of the geometry and the number of coupled chambers to maximize the available hydropneumatic power converted in the energy extraction process. The results were analyzed using the data obtained for hydropneumatic power, pressure, mass flow rate, and the calculated performance indicator’s hydropneumatic power. The Constructal Design method associated with the Exhaustive Search optimization method was used to maximize the performance indicator and determine the optimized geometric configurations. The degrees of freedom analyzed were the ratios between the height and length of the hydropneumatic chambers. A wave tank represents the computational domain. The OWC device is positioned inside it, subject to the regular incident waves. Conservation equations of mass and momentum and one equation for the transport of the water volume fraction are solved with the finite volume method (FVM). The multiphase model volume of fluid (VOF) is used to tackle the water–air mixture. The analysis of the results took place by evaluating the performance indicator in each chamber separately and determining the accumulated power, which represents the sum of all the powers calculated in all chambers. The turbine was ignored, i.e., only the duct without it was analyzed. It was found that, among the cases examined, the device with five coupled chambers converts more energy than others and that there is an inflection point in the performance indicator, hydropneumatic power, as the value of the degree of freedom increases, characterizing a decrease in the value of the performance indicator. With the results of the hydropneumatic power, pressure, and mass flow rate, it was possible to determine a range of geometry values that maximizes the energy conversion, taking into account the cases of one to five coupled chambers and the individual influence of each one.

NUMERICAL ANALYSIS OF A SAVONIUS TURBINE INSERTED IN OSCILLATING WATER COLUMN WAVE ENERGY CONVERTER

2021 ◽  
Author(s):  
Andrei Santos ◽  
Filipe Branco Teixeira ◽  
Liércio Isoldi ◽  
jeferson Avila Souza ◽  
Mateus das Neves Gomes ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Water Column ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Oscillating Water Column ◽  
Energy Converter

Uncertainty in Wave Basin Testing of a Fixed Oscillating Water Column Wave Energy Converter

2021 ◽  
Author(s):  
Frances M. Judge ◽  
Eoin Lyden ◽  
Michael O'Shea ◽  
Brian Flannery ◽  
Jimmy Murphy
Keyword(s):  
Water Column ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Width Ratio ◽  
Oscillating Water Column ◽  
Energy Converter ◽  
The Monte Carlo Method ◽  
Wave Basin ◽  
Measurement Location ◽  
The Impact

Abstract This research presents a methodology for carrying out uncertainty analysis on measurements made during wave basin testing of an oscillating water column wave energy converter. Values are determined for Type A and Type B uncertainty for each parameter of interest, and uncertainty is propagated using the Monte Carlo method to obtain an overall Expanded Uncertainty with a 95% confidence level associated with the Capture Width Ratio of the device. An analysis into the impact of reflections on the experimental results reveals the importance of identifying the incident and combined wave field at each measurement location used to determine device performance, in order to avoid misleading results.

scholarly journals Numerical Simulation of a Dual-Chamber Oscillating Water Column Wave Energy Converter

2017 ◽  
Vol 9 (9) ◽  
pp. 1599 ◽  
Author(s):  
Dezhi Ning ◽  
Rongquan Wang ◽  
Chongwei Zhang
Keyword(s):  
Numerical Simulation ◽  
Water Column ◽  
Wave Energy ◽  
Wave Energy Converter ◽  
Oscillating Water Column ◽  
Dual Chamber ◽  
Energy Converter
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