An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction
Integrating oscillating-water-column type converters (pneumatic chambers) with slack-moored floating breakwaters can be a viable option for cost-sharing between wave energy capturing devices and shore-protection structures, and thus enhance the cost-effectiveness of wave energy utilization. When des...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/98107 http://hdl.handle.net/10220/17975 |
| _version_ | 1811681307760001024 |
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| author | Huang, Zhenhua He, Fang Law, Adrian Wing-Keung |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Huang, Zhenhua He, Fang Law, Adrian Wing-Keung |
| author_sort | Huang, Zhenhua |
| collection | NTU |
| description | Integrating oscillating-water-column type converters (pneumatic chambers) with slack-moored floating breakwaters can be a viable option for cost-sharing between wave energy capturing devices and shore-protection structures, and thus enhance the cost-effectiveness of wave energy utilization. When designing such integrated systems, it is desirable to have a system that can capture wave energy over a wide range of wave frequency. In this study, a configuration of floating breakwater with asymmetric pneumatic chambers (a narrower chamber on the seaside and a wider chamber on the leeside) is proposed to increase the amplitude of the oscillating air-pressures inside both chambers over a wide range of wave frequency (thus to improve the performance in wave energy extraction). A series of experiments were carried out under regular wave conditions to study the effects of asymmetric pneumatic chambers on the hydrodynamic performance of the floating breakwater and on the oscillating air-pressures inside the two chambers. It was shown that (1) the breakwater with asymmetric chambers performed as good as that with symmetric chambers in terms of wave transmission and motion responses and (2) with asymmetric configuration, it is possible to increase the amplitude of the oscillating air-pressures inside both chambers. The new concept provides a promising way to extend the frequency range over which wave energy can be extracted. |
| first_indexed | 2024-10-01T03:38:52Z |
| format | Journal Article |
| id | ntu-10356/98107 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:38:52Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/981072020-03-07T11:43:45Z An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction Huang, Zhenhua He, Fang Law, Adrian Wing-Keung School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering Integrating oscillating-water-column type converters (pneumatic chambers) with slack-moored floating breakwaters can be a viable option for cost-sharing between wave energy capturing devices and shore-protection structures, and thus enhance the cost-effectiveness of wave energy utilization. When designing such integrated systems, it is desirable to have a system that can capture wave energy over a wide range of wave frequency. In this study, a configuration of floating breakwater with asymmetric pneumatic chambers (a narrower chamber on the seaside and a wider chamber on the leeside) is proposed to increase the amplitude of the oscillating air-pressures inside both chambers over a wide range of wave frequency (thus to improve the performance in wave energy extraction). A series of experiments were carried out under regular wave conditions to study the effects of asymmetric pneumatic chambers on the hydrodynamic performance of the floating breakwater and on the oscillating air-pressures inside the two chambers. It was shown that (1) the breakwater with asymmetric chambers performed as good as that with symmetric chambers in terms of wave transmission and motion responses and (2) with asymmetric configuration, it is possible to increase the amplitude of the oscillating air-pressures inside both chambers. The new concept provides a promising way to extend the frequency range over which wave energy can be extracted. 2013-12-02T07:49:35Z 2019-12-06T19:50:35Z 2013-12-02T07:49:35Z 2019-12-06T19:50:35Z 2013 2013 Journal Article He, F., Huang, Z., & Law, A. W. K. (2013). An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction. Applied energy, 106, 222-231. 0306-2619 https://hdl.handle.net/10356/98107 http://hdl.handle.net/10220/17975 10.1016/j.apenergy.2013.01.013 179257 en Applied energy |
| spellingShingle | DRNTU::Engineering::Environmental engineering Huang, Zhenhua He, Fang Law, Adrian Wing-Keung An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| title | An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| title_full | An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| title_fullStr | An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| title_full_unstemmed | An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| title_short | An experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| title_sort | experimental study of a floating breakwater with asymmetric pneumatic chambers for wave energy extraction |
| topic | DRNTU::Engineering::Environmental engineering |
| url | https://hdl.handle.net/10356/98107 http://hdl.handle.net/10220/17975 |
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