A numerical investigation on the risers-induced-damping phenomenon

Chatjigeorgiou, IK

dc.contributor.author	Chatjigeorgiou, IK	en
dc.date.accessioned	2014-03-01T02:51:32Z
dc.date.available	2014-03-01T02:51:32Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35538
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84859970651&partnerID=40&md5=ba6becb9b336a12ca6abdd91c3798acb	en
dc.subject.other	Catenary riser	en
dc.subject.other	Damping coefficients	en
dc.subject.other	Damping components	en
dc.subject.other	Dynamic equilibria	en
dc.subject.other	Floating structures	en
dc.subject.other	Governing system	en
dc.subject.other	Harmonic excitation	en
dc.subject.other	Numerical investigations	en
dc.subject.other	Solution methodology	en
dc.subject.other	Time domain	en
dc.subject.other	Natural resources	en
dc.subject.other	Ocean engineering	en
dc.subject.other	Time domain analysis	en
dc.subject.other	Damping	en
dc.title	A numerical investigation on the risers-induced-damping phenomenon	en
heal.type	conferenceItem	en
heal.publicationDate	2008	en
heal.abstract	This paper investigates the so-called riser induced damping phenomenon, meaning that the main goal is the calculation of the energy dissipated per cycle due to the motions of the riser in a wet environment and subsequently the derivation of the associated damping coefficients offered to the floating structure. For doing this, the complete nonlinear system of dynamic equilibrium of a catenary riser is considered. The governing system is solved in the time domain without employing any assumption regarding the contribution of the various terms. The efficiency of the method is commented briefly through comparative calculations with other solution methodologies. The evaluation of the linearized damping coefficients for harmonic excitations applied at the top of the structure of various amplitudes and frequencies reveals several interesting characteristics associated with the riser damping components. © 2008 Taylor & Francis Group, London.	en
heal.journalName	Maritime Industry, Ocean Engineering and Coastal Resources - Proceedings of the 12th International Congress of the International Maritime Association of the Mediterranean, IMAM 2007	en
dc.identifier.volume	2	en
dc.identifier.spage	849	en
dc.identifier.epage	855	en