WECs over general bathymetry:
A novel approach for performance evaluation and optimization

Μπονόβας, Μάρκος; Bonovas, Markos

dc.contributor.author	Μπονόβας, Μάρκος	el
dc.contributor.author	Bonovas, Markos	en
dc.date.accessioned	2019-05-15T07:21:36Z
dc.date.available	2019-05-15T07:21:36Z
dc.date.issued	2019-05-15
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/48722
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.9198
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Ναυτική και Θαλάσσια Τεχνολογία και Επιστήμη”	el
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Design optimization	en
dc.subject	WEC Arrays	en
dc.subject	Multi-DOF WEC	en
dc.subject	Boundary Element Method	en
dc.subject	Wave energy	en
dc.subject	Βελτιστοποίηση	el
dc.subject	Γενική βαθυμετρία	el
dc.title	WECs over general bathymetry: A novel approach for performance evaluation and optimization	en
heal.type	masterThesis
heal.classification	ΝΑΥΤΙΚΗ ΥΔΡΟΔΥΝΑΜΙΚΗ	el
heal.classification	ΑΝΑΝΕΩΣΙΜΕΣ ΠΗΓΕΣ ΕΝΕΡΓΕΙΑΣ ΚΑΙ ΕΦΑΡΜΟΓΕΣ	el
heal.classificationURI	http://data.seab.gr/concepts/f153a1858b050e85acd4d48b9602986e66543497
heal.classificationURI	http://data.seab.gr/concepts/2538c0c7b1057c59f6e1f66a99ab637afe14f4c3
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2019-02-18
heal.abstract	Power emerging from the oceans is a form of renewable energy increasingly attracting the interest of the scientific and industrial society. A brief review of wave energy technologies and an attempt for their categorization is initially presented in this thesis. The performance of Wave Energy Converters (WECs) in nearshore and coastal areas, where the bottom topography may present significant variation, is examined in this work by means of a Boundary Element Method, capable of treating hydrodynamic interaction between multiple floating bodies and general bathymetry. The methodology is based on a novel Boundary Element Method, combined with the Coupled Mode System and Perfectly Matched Layer model, for the treatment of the propagation/diffraction/radiation problems and, following its validation in 2D and 3D problems, the research focuses in the evaluation of flow details at the local scale of the energy absorbers. An important feature of the methodology is that it is free of mild-slope assumptions and restrictions. Numerical results are presented and discussed concerning the details of the wave field and the power output of a single floater with vertical cylindrical body over a region of general topography. The optimization of the device performance is examined by considering generally-shaped axisymmetric bodies and power take-off values for heaving motion. Interactions among cylindrical heaving WECs in an array layout are also examined. Finally, shape and PTO optimization are carried through for heave power mode and one additional degree of freedom, this of pitch mode of oscillation.	en
heal.advisorName	Μπελιμπασάκης, Κωνσταντίνος	en
heal.committeeMemberName	Μπελιμπασάκης, Κωνσταντίνος	en
heal.committeeMemberName	Ζαραφωνίτης, Γεώργιος	el
heal.committeeMemberName	Μαυράκος, Σπυρίδων	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	200 σ.	el
heal.fullTextAvailability	true