Abstract
The research performed in this paper was carried out to investigate the computational procedure to design seakeeping optimized ship hull form. To reach the optimized hull form, four stages should be done, which consists of: generate alternative hull form, seakeeping calculations, objective functions and optimization techniques. There are many parameters that may be determined in ship hull form optimization. This paper deals with developed strip theory for determining the seakeeping performance, genetic algorithm (GA) as optimization method, high order equations for curve fitting of the hull form and finally reaching to the minimum bow vertical motion in regular head waves. The Wigley hull is selected as an initial hull and carried to be optimized. Two cases are considered. For the first case, the only form coefficients of the hull (C B , C M , C W , C P ) are changed and main dimensions (L, B, T) are fixed. In the second case both hull form and main dimensions are varied simultaneously. Finally, optimized hull form and its seakeeping performances are presented. The results of optimization procedure demonstrate that the optimized hull forms yield a reduction in vertical motion and acceleration.
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Hassan Bagheri has graduated MSc of ocean engineering, Amirkabir University of Technology (AUT), in the field of marine hydrodynamics. Now, he is PhD candidate at AUT and working on the ship seakeeping, hull form optimization, hydrodynamics numerical method.
Hassan Ghassemi is working at department of ocean engineering, Amirkabir University of Technology (AUT), as associate professor. His current research interests include marine propulsor design, propeller theory, high-speed crafts, numerical methods and optimization techniques. He is head of marine research center of AUT.
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Bagheri, H., Ghassemi, H. Optimization of Wigley hull form in order to ensure the objective functions of the seakeeping performance. J. Marine. Sci. Appl. 13, 422–429 (2014). https://doi.org/10.1007/s11804-014-1275-5
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DOI: https://doi.org/10.1007/s11804-014-1275-5