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A Finite Element Model for Efficiency of a Moored Floating OWC Device in Regular Waves

[+] Author Affiliations
Jean-Roch Nader, Song-Ping Zhu, Paul Cooper, Brad Stappenbelt

University of Wollongong, Wollongong, NSW, Australia

Paper No. OMAE2011-49502, pp. 511-519; 9 pages
doi:10.1115/OMAE2011-49502
From:
  • ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 5: Ocean Space Utilization; Ocean Renewable Energy
  • Rotterdam, The Netherlands, June 19–24, 2011
  • ISBN: 978-0-7918-4437-3
  • Copyright © 2011 by ASME

abstract

Hydrodynamic characteristics of floating OWC can be quite difficult to predict especially when a strong coupling is present between the chamber pressure and the device movements. Mooring properties, and air pressure inside the chamber can also considerably influence the motion of the device and therefore the energy output. A newly developed 3D finite element model based on the linear wave theory has been applied to a cylindrical type OWC device. The study focused principally on the effects of the mooring restoring force and pressure pneumatic damping in the chamber total volume flux and energy conversion of the device. Results show that properly chosen parameters could effectively increase the efficiency band width of such devices.

Copyright © 2011 by ASME

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