Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device
This paper aims at presenting a general formulation of the hydrodynamic problem of a floating or restrained oscillating water column device. Three types of first-order boundary value problems are investigated in order to calculate the velocity potential of the flow field around the device. The horiz...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2012/142850 |
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| _version_ | 1832549559930191872 |
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| author | S. A. Mavrakos D. N. Konispoliatis |
| author_facet | S. A. Mavrakos D. N. Konispoliatis |
| author_sort | S. A. Mavrakos |
| collection | DOAJ |
| description | This paper aims at presenting a general formulation of the hydrodynamic problem of a floating or restrained oscillating water column device. Three types of first-order boundary value problems are investigated in order to calculate the velocity potential of the flow field around the device. The horizontal and vertical exciting wave forces, the rolling moment, the hydrodynamic parameters, the volume flows, and the drift forces are obtained in order to find the loads on the structure. The efficiency rate of the device is calculated in connection with the absorbed power and the capture length of energy absorption. Finally, the resulting wave motion inside and outside the device and the inner air pressure are examined. |
| format | Article |
| id | doaj-art-118b702a672743ae94fbaa3d84cd1db4 |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-118b702a672743ae94fbaa3d84cd1db42025-02-03T06:10:58ZengWileyJournal of Applied Mathematics1110-757X1687-00422012-01-01201210.1155/2012/142850142850Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column DeviceS. A. Mavrakos0D. N. Konispoliatis1Laboratory for Floating Structures, Mooring Systems and Division of Marine Structures, School of Naval Architecture and Marine Engineering, National Technical University of Athens, 9 Heroon Polytechniou Avenue, GR 157-73 Athens, GreeceLaboratory for Floating Structures, Mooring Systems and Division of Marine Structures, School of Naval Architecture and Marine Engineering, National Technical University of Athens, 9 Heroon Polytechniou Avenue, GR 157-73 Athens, GreeceThis paper aims at presenting a general formulation of the hydrodynamic problem of a floating or restrained oscillating water column device. Three types of first-order boundary value problems are investigated in order to calculate the velocity potential of the flow field around the device. The horizontal and vertical exciting wave forces, the rolling moment, the hydrodynamic parameters, the volume flows, and the drift forces are obtained in order to find the loads on the structure. The efficiency rate of the device is calculated in connection with the absorbed power and the capture length of energy absorption. Finally, the resulting wave motion inside and outside the device and the inner air pressure are examined.http://dx.doi.org/10.1155/2012/142850 |
| spellingShingle | S. A. Mavrakos D. N. Konispoliatis Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device Journal of Applied Mathematics |
| title | Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device |
| title_full | Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device |
| title_fullStr | Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device |
| title_full_unstemmed | Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device |
| title_short | Hydrodynamics of a Free Floating Vertical Axisymmetric Oscillating Water Column Device |
| title_sort | hydrodynamics of a free floating vertical axisymmetric oscillating water column device |
| url | http://dx.doi.org/10.1155/2012/142850 |
| work_keys_str_mv | AT samavrakos hydrodynamicsofafreefloatingverticalaxisymmetricoscillatingwatercolumndevice AT dnkonispoliatis hydrodynamicsofafreefloatingverticalaxisymmetricoscillatingwatercolumndevice |