A BEM-IsoGeometric method with application to the wavemaking resistance problem of ships at constant speed

Belibassakis, KA; Gerostathis, ThP; Kostas, KV; Politis, CG; Kaklis, PD; Ginnis, AI; Feurer, C

dc.contributor.author	Belibassakis, KA	en
dc.contributor.author	Gerostathis, ThP	en
dc.contributor.author	Kostas, KV	en
dc.contributor.author	Politis, CG	en
dc.contributor.author	Kaklis, PD	en
dc.contributor.author	Ginnis, AI	en
dc.contributor.author	Feurer, C	en
dc.date.accessioned	2014-03-01T02:52:48Z
dc.date.available	2014-03-01T02:52:48Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36082
dc.subject.other	Basis functions	en
dc.subject.other	CAD system	en
dc.subject.other	Computational hydrodynamics	en
dc.subject.other	Constant speed	en
dc.subject.other	Isogeometric analysis	en
dc.subject.other	Low degree	en
dc.subject.other	Numerical results	en
dc.subject.other	Panel methods	en
dc.subject.other	Physical quantities	en
dc.subject.other	Piecewise constant	en
dc.subject.other	Ship hull	en
dc.subject.other	Submerged bodies	en
dc.subject.other	Surface piercing	en
dc.subject.other	Velocity potentials	en
dc.subject.other	Wave resistance	en
dc.subject.other	Wavemaking resistance	en
dc.subject.other	Arctic engineering	en
dc.subject.other	Boundary integral equations	en
dc.subject.other	Computer aided design	en
dc.subject.other	Hulls (ship)	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Numerical methods	en
dc.subject.other	Ocean engineering	en
dc.subject.other	Surface resistance	en
dc.title	A BEM-IsoGeometric method with application to the wavemaking resistance problem of ships at constant speed	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1115/OMAE2011-49159	en
heal.identifier.secondary	http://dx.doi.org/10.1115/OMAE2011-49159	en
heal.publicationDate	2011	en
heal.abstract	In the present work IsoGeometric Analysis (IGA), initially proposed by Hughes et al (2005), is applied to the solution of the boundary integral equation associated with the Neumann-Kelvin (NK) problem and the calculation of the wave resistance of ships, following the formulation by Brard (1972) and Baar & Price (1988). As opposed to low-order panel methods, where the body is represented by a large number of quadrilateral panels and the velocity potential is assumed to be piecewise constant (or approximated by low degree polynomials) on each panel, the isogeometric concept is based on exploiting the NURBS basis, which is used for representing exactly the body geometry and adopts the very same basis functions for approximating the singularity distribution (or in general the dependent physical quantities). In order to examine the accuracy of the present method, in a previous paper Belibassakis et al (2009), numerical results obtained in the case of submerged bodies are compared against analytical and benchmark solutions and low-order panel method predictions, illustrating the superior efficiency of the isogeometric approach. In the present paper we extent previous analysis to the case of wavemaking resistance problem of surface piercing bodies. The present approach, although focusing on the linear NK problem which is more appropriate for thin ship hulls, it carries the IGA novelty of integrating CAD systems for shiphull design with computational hydrodynamics solvers. Copyright © 2011 by ASME.	en
heal.journalName	Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE	en
dc.identifier.doi	10.1115/OMAE2011-49159	en
dc.identifier.volume	6	en
dc.identifier.spage	95	en
dc.identifier.epage	102	en