Characteristics of a pitching wave absorber with rotatable flap

Adi Kurniawan, Torgeir Moan

Research output: Chapter in Book/Conference paperConference paper

13 Citations (Scopus)

Abstract

A bottom-fixed flap-type pitching wave energy absorber which operates near-shore is studied. The design consists of an arm hinged on the sea bed and supporting a flap. The flap has an elliptical cross section spanning vertically from the free surface to about one third of the water depth. A mechanism is provided which allows the flap to be fixed at a variable angle relative to the supporting arm. Such mechanism is here proposed as a means of broadening the absorption bandwidth and avoiding large forces while still absorbing power. The variations of maximum absorbed power and reaction force with wave frequency are obtained for different flap widths and angles and for different angular displacement limits, on the basis of linear potential theory. Further analysis on the absorber with a selected flap width is then presented and its performance is shown to be promising.

Original languageEnglish
Title of host publicationTechnoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012
PublisherElsevier
Pages134-147
Number of pages14
ISBN (Print)9781627484299
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes
EventTechnoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012 - Trondheim, Norway
Duration: 16 Apr 201218 Apr 2012

Publication series

NameEnergy Procedia
Volume20
ISSN (Print)1876-6102

Conference

ConferenceTechnoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012
CountryNorway
CityTrondheim
Period16/04/1218/04/12

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Kurniawan, A., & Moan, T. (2012). Characteristics of a pitching wave absorber with rotatable flap. In Technoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012 (pp. 134-147). (Energy Procedia; Vol. 20). Elsevier. https://doi.org/10.1016/j.egypro.2012.03.015