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CFD modelling of a small–scale fixed multi–chamber OWC device


Shalby, M and Elhanafi, A and Walker, P and Dorrell, DG, CFD modelling of a small-scale fixed multi-chamber OWC device, Applied Ocean Research, 88 pp. 37-47. ISSN 0141-1187 (2019) [Refereed Article]

Copyright Statement

Copyright 2019 Elsevier Ltd.

DOI: doi:10.1016/j.apor.2019.04.003


Wave Energy Converters (WECs)have excellent potential as a source of renewable energy that is yet to be commercially realised. Recent attention has focused on the installation of Oscillating Water Column (OWC)devices as a part of harbor walls to provide advantages of cost–sharing structures and proximity of power generation facilities to existing infrastructure. In this paper, an incompressible three–dimensional CFD model is constructed to simulate a fixed Multi–Chamber OWC (MC–OWC)device. The CFD model is validated; the simulation results are found to be in good agreement with experimental results obtained from a scale physical model tested in a wave tank. The validated CFD model is then used for a benchmark study of 96 numerical tests. These investigate the effects of the PTO damping caused by the power take–off (PTO)system on device performance. The performance is assessed for a range of regular wave heights and periods. The results demonstrate that a PTO system with an intermediate damping can be used for all chambers in the MC–OWC device for most wave period ranges, except for the long wave periods. These require a higher PTO damping. An increased incident wave height reduces the device capture width ratio, but there is a noticeable improvement for long wave periods.

Item Details

Item Type:Refereed Article
Keywords:wave energy, oscillating water column, multi–chamber OWC, CFD, experiments
Research Division:Engineering
Research Group:Electrical engineering
Research Field:Electrical energy generation (incl. renewables, excl. photovoltaics)
Objective Division:Energy
Objective Group:Renewable energy
Objective Field:Wave energy
UTAS Author:Elhanafi, A (Dr Ahmed Elhanafi)
ID Code:135045
Year Published:2019
Web of Science® Times Cited:18
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2019-09-24
Last Modified:2020-08-06

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