Journal of Marine Science and Technology

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A simpler approach to analysis ship maneuvering performances of hybrid propulsion ship using a HILS
Journal of Marine Science and Technology - Tập 26 - Trang 233-242 - 2020
Sung-An Kim
A simulation verification of the hybrid propulsion ship considering accurate electro-dynamic model is required to evaluate ship maneuverability before the maritime demonstration. This paper presents the simplified model constructions for the hybrid propulsion ship using a real time simulator in terms of the dynamic models accuracy and the improvement of a computation speed. In addition, the hardwa...... hiện toàn bộ
Positioning capability of anchor handling vessels in deep water during anchor deployment
Journal of Marine Science and Technology - Tập 20 - Trang 487-504 - 2015
Xiaopeng Wu, Giri Raja Sekhar Gunnu, Torgeir Moan
The aim of this paper is to study anchor handling vessel (AHV) thrust capacity during anchor deployment, especially in a deep water situation when high external forces are expected. The focus is on obtaining realistic external forces and evaluating the positioning capability of an AHV. Wind, wave and current loads on the AHV are considered. Current load on the mooring line, which is usually exclud...... hiện toàn bộ
A fuzzy rule-based PID controller for dynamic positioning of vessels in variable environmental disturbances
Journal of Marine Science and Technology - - 2020
Shuang Xu, Xuefeng Wang, Jie Yang, Lei Wang
Hull-form optimization using parametric modification functions and particle swarm optimization
Journal of Marine Science and Technology - Tập 21 - Trang 129-144 - 2015
Hee-Jung Kim, Jung-Eun Choi, Ho-Hwan Chun
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. The other is particle swarm optimization whic...... hiện toàn bộ
Surface intersection in geometric modeling of ship hulls
Journal of Marine Science and Technology - Tập 17 - Trang 114-124 - 2011
Manuel Ventura, C. Guedes Soares
In this work a methodology is presented for the computation of the intersection of parametric surfaces, namely Non Uniform Rational B-Splines (NURBS), with special attention to some specific requirements for applications to ship hull modeling. The algorithm adopted and the steps of the proposed method are described, namely checking whether the surfaces intersect, preprocessing of linear surfaces w...... hiện toàn bộ
Use of a 3D compartment model for simplified full ship FE model. Part II: validation of the simplified FE model
Journal of Marine Science and Technology - Tập 13 Số 4 - Trang 408-415 - 2008
Beom-Seon Jang, Jaehoon Jung, Yong-Suk Suh
Development of ship weather routing system with higher accuracy using SPSS and an improved genetic algorithm
Journal of Marine Science and Technology - Tập 26 - Trang 1324-1339 - 2021
Chong Pan, Zhanshuo Zhang, Weikang Sun, Jun Shi, Hongbo Wang
Fuel consumption is an important factor to be considered in the process of weather routing. How to choose an appropriate route according to the requirements is particularly important. This paper proposes a method to optimize the ship weather routing. Based on the original genetic algorithm, the trigonometric function selection operator is introduced, the mutation operator is improved to increase t...... hiện toàn bộ
Field measurement and numerical study of tidal current turbulence intensity in the Kobe Strait of the Goto Islands, Nagasaki Prefecture
Journal of Marine Science and Technology - - 2017
Patxi Garcia Novo, Yusaku Kyozuka
Simplification of mooring line number for model testing based on equivalent of vessel/mooring coupled dynamics
Journal of Marine Science and Technology - Tập 25 - Trang 573-588 - 2019
Mingxiao Liang, Shengwen Xu, Xuefeng Wang, Aibing Ding
To decrease the complexity of experimental setup that often results in low reliability of the experimental results for typical offshore floating structures with increasingly excessive mooring lines, a mooring line number simplification methodology is proposed based on equivalent of the vessel/mooring coupled dynamics for vessel with original and simplified mooring systems. The Non-dominated Sortin...... hiện toàn bộ
On nonlinear ship waves and wave resistance calculations
Journal of Marine Science and Technology - Tập 4 - Trang 7-15 - 1999
Daohua Zhang, Allen T. Chwang
A finite difference method based on the Euler equations is developed for computing ship waves and wave resistances. Time marching is carried out using a time-splitting fractional-step method. The second-order central difference is used to discretize the spatial differentials, while the convection terms are discretized by the QUICK scheme. A body- and free-surface-fitted grid system with a cell-ce...... hiện toàn bộ
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