Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter

This study provides the first ever published measurements of scour and morphological change around an Oscillating Water Column (OWC) Wave Energy Converter (WEC) device at a real-world site, with the intention of informing future designs to reduce costs of the technology. A 200-kW prototype OWC WEC w...

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Main Authors: Orrin Lancaster, Remo Cossu, Craig Heatherington, Scott Hunter, Tom E. Baldock
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Journal of Marine Science and Engineering
Subjects:
Online Access:https://www.mdpi.com/2077-1312/10/3/320
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author Orrin Lancaster
Remo Cossu
Craig Heatherington
Scott Hunter
Tom E. Baldock
author_facet Orrin Lancaster
Remo Cossu
Craig Heatherington
Scott Hunter
Tom E. Baldock
author_sort Orrin Lancaster
collection DOAJ
description This study provides the first ever published measurements of scour and morphological change around an Oscillating Water Column (OWC) Wave Energy Converter (WEC) device at a real-world site, with the intention of informing future designs to reduce costs of the technology. A 200-kW prototype OWC WEC was deployed at King Island, Tasmania, Australia in January 2021, providing a unique opportunity to monitor the device using a combination of dive footage, multi-beam surveys and bedrock surveys. Settlement of the device was observed and monitored before ceasing once the foundation made contact with the underlying bedrock at the site. It is hypothesized that the settlement is caused by scour undermining the gravity structure’s foundations. The processes causing this scour are explored and possible future design modifications are suggested to reduce the risk of scour and settlement.
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spelling doaj.art-a85a3c04d9b64b9da93a8ef78d0daeca2023-11-24T01:56:34ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-02-0110332010.3390/jmse10030320Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy ConverterOrrin Lancaster0Remo Cossu1Craig Heatherington2Scott Hunter3Tom E. Baldock4School of Civil Engineering, University of Queensland, St Lucia, QLD 4072, AustraliaSchool of Civil Engineering, University of Queensland, St Lucia, QLD 4072, AustraliaSchool of Civil Engineering, University of Queensland, St Lucia, QLD 4072, AustraliaWave Swell Energy Ltd., 50 Camberwell Road, Hawthorn East, Melbourne, VIC 3121, AustraliaSchool of Civil Engineering, University of Queensland, St Lucia, QLD 4072, AustraliaThis study provides the first ever published measurements of scour and morphological change around an Oscillating Water Column (OWC) Wave Energy Converter (WEC) device at a real-world site, with the intention of informing future designs to reduce costs of the technology. A 200-kW prototype OWC WEC was deployed at King Island, Tasmania, Australia in January 2021, providing a unique opportunity to monitor the device using a combination of dive footage, multi-beam surveys and bedrock surveys. Settlement of the device was observed and monitored before ceasing once the foundation made contact with the underlying bedrock at the site. It is hypothesized that the settlement is caused by scour undermining the gravity structure’s foundations. The processes causing this scour are explored and possible future design modifications are suggested to reduce the risk of scour and settlement.https://www.mdpi.com/2077-1312/10/3/320scour monitoringsediment transportOscillating Water Columnwave energylarge volume structure
spellingShingle Orrin Lancaster
Remo Cossu
Craig Heatherington
Scott Hunter
Tom E. Baldock
Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter
Journal of Marine Science and Engineering
scour monitoring
sediment transport
Oscillating Water Column
wave energy
large volume structure
title Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter
title_full Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter
title_fullStr Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter
title_full_unstemmed Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter
title_short Field Observations of Scour Behavior around an Oscillating Water Column Wave Energy Converter
title_sort field observations of scour behavior around an oscillating water column wave energy converter
topic scour monitoring
sediment transport
Oscillating Water Column
wave energy
large volume structure
url https://www.mdpi.com/2077-1312/10/3/320
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AT craigheatherington fieldobservationsofscourbehavioraroundanoscillatingwatercolumnwaveenergyconverter
AT scotthunter fieldobservationsofscourbehavioraroundanoscillatingwatercolumnwaveenergyconverter
AT tomebaldock fieldobservationsofscourbehavioraroundanoscillatingwatercolumnwaveenergyconverter