A CATIA® ship-parametric model for isogeometric hull optimization with respect to wave resistance

A. I. Ginnis, C. Feurer, K. A. Belibassakis, P. D. Kaklis, K. V. Kostas, Th P. Gerostathis, C. G. Politis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

In this work we present a generic methodology for implementing, within the CATIA® modelling environment, a parametric model for typical free-form ships so that each instance is represented as a tangentially-continuous (G 1-continuous) NURBS multi-patch surface. The methodology has been applied for constructing a container-ship parametric model that is able to generate robustly and efficiently valid hulls for a broad value range of the associated exposed parameters. The so-constructed parametric model is integrated with an, in-house developed, wave-resistance solver and the modeFrontier® optimizer for setting up an environment, that has been tested for optimizing the bow area of a container ship against the criterion of minimum wave resistance under the constraint of given displacement. Our solver adopts the Neumann-Kelvin formulation and combines the Boundary Element Method (BEM) with Isogeometric-Analysis (IGA) for the numerical solution of the resulting Boundary Integral Equation (BIE). It should be stressed that the IGA concept, recently introduced by Tom Hughes and his group at the University of Texas at Austin, aims to intrinsically integrate CAD with Analysis (FEM/BEM solver) by communicating the CAD model of the computation field to the solver without any approximation, e.g., panelization.

Original languageEnglish
Title of host publicationRINA, Royal Institution of Naval Architects - International Conference on Computer Applications in Shipbuilding 2011, Papers
Pages9-20
Number of pages12
Publication statusPublished - Dec 1 2011
EventInternational Conference on Computer Applications in Shipbuilding 2011 - Trieste, Italy
Duration: Sep 20 2011Sep 22 2011

Publication series

NameRINA, Royal Institution of Naval Architects - International Conference on Computer Applications in Shipbuilding 2011, Papers
Volume1

Other

OtherInternational Conference on Computer Applications in Shipbuilding 2011
CountryItaly
CityTrieste
Period9/20/119/22/11

ASJC Scopus subject areas

  • Computer Science Applications

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