Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 284, Issue -, Pages 611-622Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2014.10.030
Keywords
T-spline; Wave-resistance; Shape-optimization; Ship-hull
Funding
- 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]
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In this work, we present a ship-hull optimization process combining a T-spline based parametric ship-hull model and an Isogeometric Analysis (IGA) hydrodynamic solver for the calculation of ship wave resistance. The surface representation of the ship-hull instances comprise one cubic T-spline with extraordinary points, ensuring C-2 continuity everywhere except for the vicinity of extraordinary points where G(1) continuity is achieved. The employed solver for ship wave resistance is based on the Neumann-Kelvin formulation of the problem, where the resulting Boundary Integral Equation is numerically solved using a higher order collocated Boundary Element Method which adopts the IGA concept and the T-spline representation for the ship-hull surface. The hydrodynamic solver along with the ship parametric model are subsequently integrated within an appropriate optimization environment for local and global ship-hull optimizations against the criterion of minimum resistance. (C) 2014 Elsevier B. V. All rights reserved.
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