Analysis of the hydrodynamics of four different oscillating wave surge converter concepts

S.D.G.S.P. Gunawardane, M. Folley and C.J. Kankanamge

Renewable Energy, 2019, vol. 130, issue C, 843-852

Abstract: The fundamental hydrodynamic responses for four different oscillating wave surge converters (OWSCs) variants are analysed and compared. The four variants include; an isolated flap, a flap in front of a wall, a flap inside a caisson with an isolated water chamber behind the flap and a flap inside a caisson with a water chamber behind the flap that is linked to the water outside via to a gap under the flap. The flap rotations and power captures for the four variants are obtained using a frequency-domain model, with the flap response amplitude operator constrained to be less than 15°/m and the power capture maximised for damping-only control. It is shown that the four variants have qualitatively different frequency-dependencies in rotations and power captures, which are shown to be linked to differing values for the incident wave torque and system natural frequencies. A notable discovery was the existence of a potentially-exploitable water chamber pumping mode for a flap in a caisson with a gap under the flap, which had not previously been identified. The (dis)similarities between the flap variants are identified and discussed, providing a method by which the relative performance of the different variants can be understood.

Keywords: Wave energy; OWSC; Pendulor; Frequency-domain; Design; Hydrodynamics (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S096014811830781X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:130:y:2019:i:c:p:843-852

DOI: 10.1016/j.renene.2018.06.115

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().