Parametric evaluation of the performance characteristics of tight moored wave energy converters

Mavrakos, SA; Katsaounis, GM

dc.contributor.author	Mavrakos, SA	en
dc.contributor.author	Katsaounis, GM	en
dc.date.accessioned	2014-03-01T02:50:11Z
dc.date.available	2014-03-01T02:50:11Z
dc.date.issued	2005	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34934
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-27744585912&partnerID=40&md5=14ae74059cd62a70f5c791ca984e1f3b	en
dc.subject	Converter	en
dc.subject	Tight moored buoy	en
dc.subject	Wave energy	en
dc.subject.other	Climate change	en
dc.subject.other	Diffraction	en
dc.subject.other	Eigenvalues and eigenfunctions	en
dc.subject.other	Evaluation	en
dc.subject.other	Frequency domain analysis	en
dc.subject.other	Hydraulic equipment	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Mooring	en
dc.subject.other	Performance	en
dc.subject.other	Eigenfunction expansion	en
dc.subject.other	Pressurized fields	en
dc.subject.other	Velocity potentials	en
dc.subject.other	Wave energy converters	en
dc.subject.other	Wave energy conversion	en
dc.title	Parametric evaluation of the performance characteristics of tight moored wave energy converters	en
heal.type	conferenceItem	en
heal.identifier.secondary	OMAE2005-67338	en
heal.publicationDate	2005	en
heal.abstract	The paper aims at presenting a numerical model to predict performance characteristics of tight moored vertical axisymmetric wave energy converters that are allowed to move in heave, pitch and sway modes of motion. The hydrodynamic characteristics (exciting wave forces, hydrodynamic parameters) of the floats are evaluated using a linearized diffraction - radiation method of analysis that is suited for the type of bodies under consideration. According to this method matched axisymmetric eigenfunction expansions of the velocity potentials in properly defined fluid regions around the body are introduced to solve the respective diffraction and radiation problems and to calculate the floats' hydrodynamic characteristics in the frequency domain. Based on these characteristics, the retardation forcing terms are calculated, which account for the memory effects of the motion. In this procedure, the coupling terms between the different modes of motion are properly formulated and taken into account The floating WEC is connected to an underwater piston that feeds a hydraulic system with pressurized fluid. Numerical results showing parametrically the performance characteristics in terms of the expected power production for several types of floats that are exposed to the wave climate conditions commonly encountered in the Mediterranean area are presented and discussed Copyright © 2005 by ASME.	en
heal.journalName	Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE	en
dc.identifier.volume	2	en
dc.identifier.spage	751	en
dc.identifier.epage	757	en