期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 279, 期 -, 页码 425-439出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2014.07.001
关键词
T-splines; Isogeometric analysis; BEM; Wave resistance
资金
- European Union (European Social Fund - ESF)
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF) - Research Funding Program: THALIS-UOA [MIS 375891]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1101007] Funding Source: National Science Foundation
In this paper we couple collocated Boundary Element Methods (BEM) with unstructured analysis-suitable T-spline surfaces for solving a linear Boundary Integral Equation (BIB) arising in the context of a ship-hydrodynamic problem, namely the so-called Neumann-Kelvin problem, following the formulation by Brard (1972) and Baar and Price (1988). The local-refinement capabilities of the adopted T-spline bases, which are used for representing both the geometry of the hull and approximating the solution of the associated ME, in accordance with the Isogeometric concept proposed by Hughes et al. (2005), lead to a solver that achieves the same error level for many fewer degrees of freedom as compared with the corresponding NURBS-based Isogeometric-BEM solver recently developed in Belibassakis et al. (2013). In this connection, this paper makes a step towards integrating modern CAD representations for ship-hulls with hydrodynamic solvers of improved accuracy and efficiency, which is a prerequisite for building efficient ship-hull optimizers. (C) 2014 Elsevier B.V. All rights reserved.
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