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Preliminary investigation on the use of tank wall reflections to model WEC array effects

Citation

Winship, B and Fleming, A and Penesis, I and Hemer, M and MacFarlane, G, Preliminary investigation on the use of tank wall reflections to model WEC array effects, Ocean Engineering, 164 pp. 388-401. ISSN 0029-8018 (2018) [Refereed Article]

Copyright Statement

Copyright 2018 Elsevier Ltd.

DOI: doi:10.1016/j.oceaneng.2018.06.033

Abstract

The commercialisation of wave energy converters (WECs) is certain to require the deployment of multiple units in arrays. The collocation of WEC units into an array will lead to hydrodynamic interactions collectively referred to as array effects. Understanding these effects is important for successful developments, concerning energy capture and government approval. To better understand array effects physical experiments and numerical modelling can be completed prior to field deployments.

This work explores utilising the reflections from walls to simulate array effects. Including the application and assessment of stereo-videogrammetry for experiments and numerical modelling with Nemoh, a linear potential flow solver. The investigation uses a cylinder fixed in the centre of a wave flume to simulate wave scattering, a component of the hydrodynamics of WECs. The stereo-videogrammetry method uses small buoyant wax particles so that the free surface can be mapped with software from LaVision.

It is s

hown that the stereo-videogrammetry approach applied is able to accurately measure water waves; however there are challenges associated to higher steepness waves and the resulting drift of surface particles. Both the experimental and numerical investigations show great potential in the use of wall reflections to model array effects and correlate well.

Item Details

Item Type:Refereed Article
Keywords:method of images, WEC array effects, stereo-videogrammetry, linear potential flow, Nemoh
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ocean Engineering
Objective Division:Energy
Objective Group:Renewable Energy
Objective Field:Wave Energy
UTAS Author:Winship, B (Mr Brian Winship)
UTAS Author:Fleming, A (Dr Alan Fleming)
UTAS Author:Penesis, I (Associate Professor Irene Penesis)
UTAS Author:Hemer, M (Dr Mark Hemer)
UTAS Author:MacFarlane, G (Associate Professor Gregor MacFarlane)
ID Code:129911
Year Published:2018
Deposited By:Mathematics and Physics
Deposited On:2018-12-20
Last Modified:2019-03-14
Downloads:0

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