Results 141 to 150 of about 82,900 (182)

Hull-form optimization using parametric modification functions and particle swarm optimization

Journal of Marine Science and Technology, 2015
The focus of this paper is on devising designer-friendly hull-form variations coupled with optimization algorithms. Hull-form variations are carried out through parametric modification functions. Two kinds of representative optimization algorithms are considered here. One is the well-known sequential quadratic programming which is the derivative based.
Hee-Jung Kim, Jung-Eun Choi, Ho-Hwan Chun   +2 more
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Hydrodynamic optimization of ship hull forms in shallow water

Journal of Marine Science and Technology, 2004
A computational method for improving hull form in shallow water with respect to wave resistance is presented. The method involves coupling ideas from two distinct research fields: numerical ship hydrodynamics and nonlinear programming techniques. The wave resistance is estimated by means of Morino’s panel method, which is extended to free surface flow ...
Goutam Kumar Saha, Kazuo Suzuki, Hisashi Kai   +2 more
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Ship Hull Form Optimization Using Artificial Bee Colony Algorithm

SNAME Maritime Convention, 2014
In this paper, artificial bee colony (ABC) algorithms are introduced to optimize ship hull forms for reduced drag. Two versions of ABC algorithm are used: one is the basic ABC algorithm, and the other is an improved artificial bee colony (IABC) algorithm.
Fuxin Huang, Lijue Wang, Chi Yang
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Hull form hydrodynamic optimization based on parametric modeling

2012 International Conference on Systems and Informatics (ICSAI2012), 2012
This paper discusses the hydrodynamic optimization of hull form mainly. The study has been carried out using an integrated tool for hydrodynamic optimization, incorporating a CAD modeler for definition and parametric modification of hull forms, CFD codes for the evaluation of hydrodynamic performance and software for optimization and decision making. A
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Hull Form Optimization Based on the CFD Technique

2018
Based on the RANS solver, the aim of this section is to present several ship hull form optimization loops in the calm water and in waves. Taking the DTMB5415 and Wigley III ships as examples, the total resistance of a ship in calm water or in waves is regarded as the objective function.
Bao-Ji Zhang, Sheng-Long Zhang
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Hull form optimization of trimaran using self-blending method

Applied Ocean Research, 2018
Abstract A ship hull modification method called self-blending, combined with CFD (Computational fluid dynamics) and MIGA (Multi-island genetic algorithm), has been developed and applied to the optimization of a trimaran. The modification of ship hull has been carried out through merging the given cross sections picked from the original ship hull. Six
Zhi Zong, Zhichao Hong, Yigeng Wang, H. Hefazi   +3 more
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Genetic Algorithm In Ship Hull Form Optimization

1999
The paper presents a computational method developed for solving the minimum ship wave resistance problem. The numerical method for solving the three-dimensional potential flow around a ship moving at constant speed in calm water is based upon a Rankine source method.
Dejhalla, Roko, Zamarin, Albert, Prpić-Oršić, Jasna   +2 more
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Self-blending method for hull form modification and optimization

Ocean Engineering, 2017
Abstract A self-blending method has been developed and applied to the modification of a bulbous bow. The method is capable of transforming ship hulls automatically. In this method, few representative number of cross sections (the key points of the cross sections) of the baseline geometry are selected.
Z.C. Hong, Z. Zong, H.T. Li, H. Hefazi, P.K. Sahoo   +4 more
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Multiobjective Optimization of Hull Form Based on Global Optimization Algorithm

Journal of Shanghai Jiaotong University (Science), 2022
Jie Liu, Baoji Zhang
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Hull Form Optimization of a TriSWACH for Reduced Drag

SNAME 13th International Conference on Fast Sea Transportation, 2015
A new methodology for hydrodynamic optimization of a TriSWACH is developed, which considers the shape of the center hull only and its optimal results are not influenced by the position configuration of side hulls. In order to accelerate the process of the optimization, a practical multi-objective hydrodynamic tool has been further developed by ...
Fuxin Huang, Lijue Wang, Chi Yang, Richard A. Royce   +3 more
openaire   +1 more source