Wave generation in an OWC system for wave energy conversion

Bouhrim Hafsa,El Marjani Abdellatif,Hamid Mounir,M El Ganaoui,B Liu,R Bennacer,S Morsli,M Darcherif

doi:10.1051/matecconf/202030701012

Bouhrim Hafsa, El Marjani Abdellatif + Show 6 more

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https://doi.org/10.1051/matecconf/202030701012

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Abstract

This paper aims to present an overview on the wavemakers used to generate waves inside a numerical wave tank taking into consideration the biphasic air-water aspect of the incident wave. Wave markers are used to simulate the flow dynamic behaviour in the Oscillating Water Column (OWC) for wave energy conversion. Three kinds of these systems have been considered in the present work. To compare these types of wave generators a case study was adopted with the assumption of a fluid flow which is unsteady, 2D, biphasic (air-water), and k-epsilon turbulent. It has been found that the piston and the flap wave maker types are suitable for OWC device simulations.

Highlights

IntroductionWave energy stands out among the most relevant renewable and sustainable energy resources; This explains the great research and development efforts made in the field of wave energy exploitation, which produced many designs and technologies classified as mentioned in [1]; devices off-shore, near shore, and on shore
Wave energy stands out among the most relevant renewable and sustainable energy resources; This explains the great research and development efforts made in the field of wave energy exploitation, which produced many designs and technologies classified as mentioned in [1]; devices off-shore, near shore, and on shore. Another way to classify the wave energy converters is based on their operating principle: OWCdevices, Surging devices, Overtopping devices [2]
The computational domain used in the current work is performed in Figure 6 in which the geometry dimensions are chosen so that they take into account the incident wave characteristics in terms of wave height (H), wave period (T), and water depth (d)

Summary

Introduction

Wave energy stands out among the most relevant renewable and sustainable energy resources; This explains the great research and development efforts made in the field of wave energy exploitation, which produced many designs and technologies classified as mentioned in [1]; devices off-shore, near shore, and on shore Another way to classify the wave energy converters is based on their operating principle: OWCdevices, Surging devices, Overtopping devices [2]. The flow rate of air through the turbine is created by the successive incident sea water waves that compress and depressurize air in the chamber by means of the periodic motion of the oscillating free surface. The conversion of this air flow into mechanical

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