[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Bottom slamming on heaving point absorber wave energy devices
De Backer, G.; Vantorre, M.; Frigaard, P.; Beels, C.; De Rouck, J. (2010). Bottom slamming on heaving point absorber wave energy devices. Journal of Marine Science and Technology 15(2): 119-130. dx.doi.org/10.1007/s00773-010-0083-0
In: Journal of Marine Science and Technology. National Taiwan Ocean University: Keelung. ISSN 1023-2796, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoord
    Marien/Kust
Author keywords
    Emergence occurrence probability; Impact; Point absorber; Slamming; Wave
Auteurs  Top 
  • De Backer, G., meer
  • Vantorre, M., meer
  • Frigaard, P.
Abstract
    Oscillating point absorber buoys may rise out of the water and be subjected to bottom slamming upon re-entering the water. Numerical simulations are performed to estimate the power absorption, the impact velocities and the corresponding slamming forces for various slamming constraints. Three buoy shapes are considered: a hemisphere and two conical shapes with deadrise angles of 30 and 45, with a waterline diameter of 5 m. The simulations indicate that the risk of rising out of the water is largely dependent on the buoy draft and sea state. Although associated with power losses, emergence occurrence probabilities can be significantly reduced by adapting the control parameters. The magnitude of the slamming load is severely influenced by the buoy shape. The ratio between the peak impact load on the hemisphere and that on the 45 cone is approximately 2, whereas the power absorption is only 4-8% higher for the 45° cone. This work illustrates the need to include slamming considerations aside from power absorption criteria in the buoy shape design process and the control strategy.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ.