 |
Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
 |
|
Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
|
| HAL : hal-00457713, version 1 |
| Fiche détaillée |  Récupérer au format |
 |
| 23 rd International Workshop Water Waves and Floating Bodies, Jeju : Corée, République De (2008) |
|
|
|
|
| Tapping wave energy through Longuet-Higgins microseism effect |
|
|
| Bernard Molin 1, 2D. Lajoie 3 |
|
|
| (2008) |
|
|
|
| It is well-known, since the works of Miche (1944) and Longuet-Higgins (1950), that, under a standing wave system, second-order pressures at twice the wave frequency penetrate the water column down to the sea-°oor, whatever the waterdepth. Recently Gu¶evel proposed that energy could be extracted from the waves with a heaving horizontal plate at the sea bottom, located next to a re°ective cli® or sea-wall, and tuned to oscillate at twice the wave frequency. Encouraging preliminary experiments were conducted in ACRI's wavetank (Lajoie et al. 2007). In this paper we address the theoretical modeling of wave energy extraction with such a device, in the asymptotic case when the waterdepth is very large compared to the wavelength. In section I we assume that the ¯rst-order wave system is little modi¯ed, i.e. the power taken from the waves is a small portion of the power carried by the incoming wave. In section II we relieve this assumption and we show that one hundred percent of the wave power can be extracted, notwithstanding how large the waterdepth. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Institut de Recherche sur les Phénomènes Hors Equilibre (IRPHE) |
|
|
|
CNRS : UMR6594 – Université de Provence - Aix-Marseille I – Université de la Méditerranée - Aix-Marseille II – Ecole Centrale de Marseille |
|
|
| 2 : | Ecole Centrale de Marseille (ECM) |
|
|
|
Ecole Centrale de Marseille |
|
|
| 3 : | ACRI (ACRI) |
|
|
|
acri |
|
|
| 4 : | Laboratoire Jean Alexandre Dieudonné (JAD) |
|
|
|
CNRS : UMR6621 – Université Nice Sophia Antipolis [UNS] |
|
|
|
|
|
|
|
|
|
| Domaine | : | Physique/Mécanique/Mécanique des fluides Sciences de l'ingénieur/Mécanique/Mécanique des fluides |
|
|
| Liste des fichiers attachés à ce document : | |||||
|
|||||
|
|
|
| hal-00457713, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00457713 | |
| oai:hal.archives-ouvertes.fr:hal-00457713 | |
| Contributeur : Hubert Branger | |
| Soumis le : Jeudi 18 Février 2010, 11:52:49 | |
| Dernière modification le : Jeudi 18 Février 2010, 11:53:50 | |
