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Shuling Chen, Beilei Zou, Changzhi Han and Shiqiang Yan
Bow shape has been recognized as an important factor influencing the seakeeping performance and added resistance of ships. This paper presents a numerical comparative study on added resistance and seakeeping of model ships with ?X-bow? and a wave-piercin...
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Chunjie Zheng, Haitao Wang, Lanxiang Hu and Yuanli Cai
To study the hose-and-drogue system?s motion under bow waves, this paper established a dynamic model of the hose-and-drogue system based on the multibody dynamics theory and the rigid ball-and-rod model. The wake of a tanker aircraft was taken into accou...
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Guangsheng Su, Hailong Shen and Yumin Su
The central hull is the most important structure in the planing trimaran. In order to gain insight into the relationship between hydrodynamic performance and main hull shape, experimental tests and numerical simulations were carried out for volume Froude...
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Chengzhe Zhang, Weiyi Zhang, Hao Qin, Yunwu Han, Enjin Zhao, Lin Mu and Haoran Zhang
In recent decades, freak waves, characterized by their unusual high amplitude, sharp crest, and concentrated energy, have attracted researchers? attention due to their potential threat to marine structures. Green-water loads caused by freak waves can be ...
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Xiaoqing Tian, Tianwei Xie, Zhangming Liu, Xianghua Lai, Huachen Pan, Chizhong Wang, Jianxing Leng and M. M. Rahman
The resistance of a large Pure Car Truck Carrier (PCTC) with a bulbous bow and a transom stern is evaluated in the present paper. Several cases at nine different ship speeds in calm water are simulated and results are compared with the experimental measu...
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O. V. Kravchenko, O. A. Azarova and D. D. Knight
The problem of noise reduction in supersonic aircraft design is one of the key problems, the solution of which largely determines the speed of development of supersonic aviation as a whole. The present study examines the noise generation during flights o...
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Trung-Kien Le, Ngo Van He, Ngo Van Hien and Ngoc-Tam Bui
In this study, the effect of bow shape on resistance acting on a hull in regular head waves was investigated by applying a commercial Computational Fluid Dynamics (CFD) code. For this purpose, the hydrodynamic performance as well as the resistance of shi...
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Rui Deng, Shigang Wang, Wanzhen Luo and Tiecheng Wu
In this study, particle image velocimetry was applied to measure the flow field around the bow region of a trimaran with different appendages. The dimensionless axial velocity u/U in test planes 1 and 2 of the testing model was measured by using a towed ...
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Xing He, Qiaogao Huang, Guocang Sun and Xihui Wang
A numerical analysis based on stress-blended eddy simulation was conducted to investigate the pressure fluctuation of the bow of a submarine at various velocities (5.93 kn, 10 kn, and 12 kn). The simulation results were compared with the experimental dat...
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Kostas Belibassakis, Evangelos Filippas and George Papadakis
Flapping-foil thrusters arranged at the bow of the ship are examined for the exploitation of energy from wave motions by direct conversion to useful propulsive power, offering at the same time dynamic stability and reduction of added wave resistance. In ...
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Kestutis Ikamas, Dmytro B. But and Alvydas Lisauskas
Over the last two decades, photomixer-based continuous wave systems developed into versatile and practical tools for terahertz (THz) spectroscopy. The high responsivity to the THz field amplitude of photomixer-based systems is predetermined by the homody...
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Jialong Jiao and Songxing Huang
Accurate prediction of ship seakeeping performance in complex ocean environment is a fundamental requirement for ship design and actual operation in seaways. In this paper, an unsteady Reynolds-averaged Navier?Stokes (RANS) computational fluid dynamics (...
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Qinglong Chen, Hongwei Li, Shudi Zhang, Jian Wang, Yongjie Pang and Qingyun Wang
Emergent buoyantly rising submarines encounter excess roll problems, partially owing to waves that significantly affect their behavior. This study predicts the behavior of a submarine, including when it rises in static water, beam sea, head wave, followi...
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Gu-Hyeon Kim, Seunghyun Hwang, Soon-Hyun Lee, Jun-Hee Lee, Jun Hwangbo, Kwang-Soo Kim and Kwang-Jun Paik
Accurate resistance performance evaluation is essential to predict the minimum propulsion horsepower required for ships in real sea. Therefore, in this paper, the added resistance performance of K-Supramax in various wave conditions was calculated using ...
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Ivana Gledic, Antonio Mikulic and Jo?ko Parunov
Specialized procedures to help in the emergency response situations following ship accidents have been under development by the Classification Societies. Such procedures consider the hull-girder collapse as the most important failure mode, without the po...
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Guangyu Shi, Alexandros Priftis, Yan Xing-Kaeding, Evangelos Boulougouris, Apostolos D. Papanikolaou, Haibin Wang and Geoff Symonds
This paper numerically investigates the resistance at full-scale of a zero-emission, high-speed catamaran in both deep and shallow water, with the Froude number ranging from 0.2 to 0.8. The numerical methods are validated by two means: (a) Comparison wit...
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Kim Nielsen and Jonas Bjerg Thomsen
The critical function of keeping a floating Wave Energy Converter in position is done by a mooring system. Several WECs have been lost due to failed moorings, indicating that extreme loads, reliability and durability are very important aspects. An unders...
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Gian C. Bremm, Nils Goseberg, Torsten Schlurmann and Ioan Nistor
In the context of dam breaks, tsunami, and flash floods, it is paramount to quantify the time-history of forces by the rapidly transient flow to vertical structures and the characteristics of the induced flow patterns. To resemble on-land tsunami-induced...
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Bruno Paduano, Nicolás Faedo and Giuliana Mattiazzo
In the pathways towards the commercialisation of wave energy systems, the need for reliable mathematical models is of paramount importance for the design and synthesis of model-based control techniques to maximise the performance of wave energy converter...
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Jiong Li, Xuesong Bai, Yang Li, Hongwang Du, Fangtao Fan, Shuaixian Li, Zhi Li and Wei Xiong
To solve the problem that small rescue vessels are seriously affected by waves when working at sea, which causes damage to the crew and equipment, a catamaran with a suspended and articulated cabin is designed. The multi-body dynamic model of the whole v...
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