An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths

For cost savings and ease of operation, nearshore regions have been considered as ideal regions for deploying wave energy converters (WECs) and wave farms. As the water depths of these regions may be frequently limited to 50 m or less, they can be considered as being transitional/intermediate to sha...

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Main Authors: Wanan Sheng, Hui Li, Jimmy Murphy
Format: Article
Language:English
Published: MDPI AG 2017-08-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/10/8/1188
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author Wanan Sheng
Hui Li
Jimmy Murphy
author_facet Wanan Sheng
Hui Li
Jimmy Murphy
author_sort Wanan Sheng
collection DOAJ
description For cost savings and ease of operation, nearshore regions have been considered as ideal regions for deploying wave energy converters (WECs) and wave farms. As the water depths of these regions may be frequently limited to 50 m or less, they can be considered as being transitional/intermediate to shallow when compared to the wave lengths of interest for wave energy conversion. Since the impact of water depths on propagation of waves is significant, it cannot be ignored in wave energy assessment. According to the basic wave theory, in order to work out accurate wave energy amounts in finite water depth, detailed wave spectral distributions should be given. However, for some practical reasons, there are still some cases where only scatter diagrams and/or the statistical wave parameters are available, whilst the detailed wave spectra are discarded. As a result, the assessments of wave energy and resources are frequently determined by ignoring the effect of water depths or using very simplified approximations. This research paper aims to develop more accurate approximation methods by utilising a number of available parameters such that a better estimate on the wave resource assessment can be achieved even if the detailed wave spectra are not available. As one important goal, the research can provide some important indications on how the measured wave data are effectively presented so that they can be very useful for assessing the wave energy resource, especially in the cases including the effects of finite water depths.
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spelling doaj.art-d05f916371984d078284bcd6ecd7c1792022-12-22T04:01:04ZengMDPI AGEnergies1996-10732017-08-01108118810.3390/en10081188en10081188An Improved Method for Energy and Resource Assessment of Waves in Finite Water DepthsWanan Sheng0Hui Li1Jimmy Murphy2Centre for Marine and Renewable Energy Ireland, Environmental Research Institute, University College Cork, Cork P43 C573, IrelandCollege of Mechanical and Energy Engineering, Jimei University, Xiamen 361021, ChinaCentre for Marine and Renewable Energy Ireland, Environmental Research Institute, University College Cork, Cork P43 C573, IrelandFor cost savings and ease of operation, nearshore regions have been considered as ideal regions for deploying wave energy converters (WECs) and wave farms. As the water depths of these regions may be frequently limited to 50 m or less, they can be considered as being transitional/intermediate to shallow when compared to the wave lengths of interest for wave energy conversion. Since the impact of water depths on propagation of waves is significant, it cannot be ignored in wave energy assessment. According to the basic wave theory, in order to work out accurate wave energy amounts in finite water depth, detailed wave spectral distributions should be given. However, for some practical reasons, there are still some cases where only scatter diagrams and/or the statistical wave parameters are available, whilst the detailed wave spectra are discarded. As a result, the assessments of wave energy and resources are frequently determined by ignoring the effect of water depths or using very simplified approximations. This research paper aims to develop more accurate approximation methods by utilising a number of available parameters such that a better estimate on the wave resource assessment can be achieved even if the detailed wave spectra are not available. As one important goal, the research can provide some important indications on how the measured wave data are effectively presented so that they can be very useful for assessing the wave energy resource, especially in the cases including the effects of finite water depths.https://www.mdpi.com/1996-1073/10/8/1188wave energywave energy resourcefinite water depthstatistical wave periodapproximation methodpolynomial function
spellingShingle Wanan Sheng
Hui Li
Jimmy Murphy
An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths
Energies
wave energy
wave energy resource
finite water depth
statistical wave period
approximation method
polynomial function
title An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths
title_full An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths
title_fullStr An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths
title_full_unstemmed An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths
title_short An Improved Method for Energy and Resource Assessment of Waves in Finite Water Depths
title_sort improved method for energy and resource assessment of waves in finite water depths
topic wave energy
wave energy resource
finite water depth
statistical wave period
approximation method
polynomial function
url https://www.mdpi.com/1996-1073/10/8/1188
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