Experimental verification of the linear and non-linear versions of a panel code

Grigoropoulos, GJ; Katsikis, C; Chalkias, DS

dc.contributor.author	Grigoropoulos, GJ	en
dc.contributor.author	Katsikis, C	en
dc.contributor.author	Chalkias, DS	en
dc.date.accessioned	2014-03-01T01:35:40Z
dc.date.available	2014-03-01T01:35:40Z
dc.date.issued	2011	en
dc.identifier.issn	2092-6782	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21160
dc.subject	Model tests	en
dc.subject	Non-linearity	en
dc.subject	Panel method	en
dc.subject	Seakeeping	en
dc.subject	Time-domain	en
dc.subject.other	Analytical results	en
dc.subject.other	Experimental verification	en
dc.subject.other	Geometrical complexity	en
dc.subject.other	Geometrical modeling	en
dc.subject.other	High-speed	en
dc.subject.other	Hull forms	en
dc.subject.other	Hydrostatic forces	en
dc.subject.other	Linear codes	en
dc.subject.other	Model tests	en
dc.subject.other	Non-Linearity	en
dc.subject.other	Nonlinear versions	en
dc.subject.other	Numerical calculation	en
dc.subject.other	Numerical predictions	en
dc.subject.other	Panel codes	en
dc.subject.other	Panel methods	en
dc.subject.other	Time domain	en
dc.subject.other	Transom stern	en
dc.subject.other	Codes (symbols)	en
dc.subject.other	Dynamic response	en
dc.subject.other	Forecasting	en
dc.subject.other	Hulls (ship)	en
dc.subject.other	Hydraulics	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Seakeeping	en
dc.subject.other	Time domain analysis	en
dc.title	Experimental verification of the linear and non-linear versions of a panel code	en
heal.type	journalArticle	en
heal.identifier.primary	10.3744/JNAOE.2011.3.1.027	en
heal.identifier.secondary	http://dx.doi.org/10.3744/JNAOE.2011.3.1.027	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	In the proposed paper numerical calculations are carried out using two versions of a three-dimensional, time-domain panel method developed by the group of Prof. P. Sclavounos at MIT, i.e. the linear code SWAN2, enabling optionally the use of the instantaneous non-linear Froude-Krylov and hydrostatic forces and the fully non-linear SWAN4. The analytical results are compared with experimental results for three hull forms with increasing geometrical complexity, the Series 60, a reefer vessel with stern bulb and a modern fast ROPAX hull form with hollow bottom in the stern region. The details of the geometrical modeling of the hull forms are discussed. In addition, since SWAN4 does not support transom sterns, only the two versions of SWAN2 were evaluated over experimental results for the parent hull form of the NTUA double-chine, wide-transom, high-speed monohull series. The effect of speed on the numerical predictions was investigated. It is concluded that both versions of SWAN2 the linear and the one with the non-linear Froude-Krylov and hydrostatic forces provide a more robust tool for prediction of the dynamic response of the vessels than the non-linear SWAN4 code. In general, their results are close to what was expected on the basis of experience. Furthermore, the use of the option of non-linear Froude-Krylov and hydrostatic forces is beneficial for the accuracy of the predictions. The content of the paper is based on the Diploma thesis of the second author, supervised by the first one and further refined by the third one. © SNAK, 2011.	en
heal.publisher	SOC NAVAL ARCHITECTS KOREA	en
heal.journalName	International Journal of Naval Architecture and Ocean Engineering	en
dc.identifier.doi	10.3744/JNAOE.2011.3.1.027	en
dc.identifier.isi	ISI:000291127400004	en
dc.identifier.volume	3	en
dc.identifier.issue	1	en
dc.identifier.spage	27	en
dc.identifier.epage	36	en