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Mahmoud Helal, Huinan Huang, Defu Wang and Elsayed Fathallah
The pressure hull is the primary element of submarine, which withstands diving pressure and provides essential capacity for electronic systems and buoyancy. This study presents a numerical analysis and design optimization of sandwich composite deep subma...
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Yiran Su, Seungnam Kim and Spyros A. Kinnas
In order to predict ship hull pressure fluctuations induced by marine propellers, a combination of several numerical schemes is used. The propeller perturbation flow is solved by the boundary element method (BEM), while the coupling between a BEM solver ...
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Yiran Su, Seungnam Kim and Spyros A. Kinnas
In order to predict ship hull pressure fluctuations induced by marine propellers, a combination of several numerical schemes is used. The propeller perturbation flow is solved by the boundary element method (BEM), while the coupling between a BEM solver ...
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Jianxing Zhang, Baoren Li, Yuxuan Peng, Daming Zou and Gang Yang
Underwater gliders are a class of ocean observation equipment driven by buoyancy, and their energy consumption source is mainly generated by the active regulation of buoyancy. The periodic elastic deformation of the pressure hull during the upward and do...
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Zhe Sun, Xupeng Sui, Yanzeng Deng, Li Zou, A. Korobkin, Lixin Xu and Yichen Jiang
In this paper, the characteristics of the impact pressure and force of a trimaran section was studied by Computational Fluid Dynamics (CFD). The time domain features of the slamming pressure or force showed a strong correlation with the penetration depth...
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Alessia Meschini, Alessandro Ridolfi, Jonathan Gelli, Marco Pagliai and Andrea Rindi
This paper describes design methods for the plastic hull of an Unmanned Underwater Vehicle (UUV), with a particular focus on its cylindrical body and nearly spherical domes at the ends. With the proposed approach, the methodologies reported in the litera...
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Weixin Zhou, Yao Zhao, Hua Yuan and Zhaoxin Ren
The unclear change laws of bearing offset and rotation, both of which influence the condition of shaft alignment during hull deformation, make it difficult to optimize shafting design. In this paper, an integrated hull-bearing-shaft model is designed and...
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Yuri Katz and Morel Groper
This study presents the complete, detailed development process of an enhanced one-man portable Lagrangian float designed for littoral deployment to depths of up to 300 m. The design focused on maximization of the Lagrangian characteristics of the hull, m...
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Yongsheng Li, Changli Yu, Weibo Wang, Hongyun Li and Xu Jiang
With the increasing application and study of lightweight and high strength fiber reinforced polymer composites in ocean industry, the structural failure problem of composite pressure hulls has attracted great attention from many researchers in China and ...
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Chaosheng Zheng, Dengcheng Liu and Hongbo Huang
The numerical simulation of propeller cavitation benchmark tests of YUPENG ship model is studied based on OpenFOAM, an open-source CFD (Computational Fluid Dynamics) platform, and the benchmark tests are introduced as well. The propeller cavitation shape...
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Inno Gatin, Juvel Cokic, Darjan Romic and Jo?ko Parunov
Submersible vessels designed to operate at low speeds are often designed with an intricate exostructure, as well as other elements that are located outside of the main pressure hull. Exostructure elements are often of cylindrical or rectangular shape, po...
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Johan Bosschers
A semi-empirical method is presented that predicts broadband hull-pressure fluctuations and underwater radiated noise due to propeller tip vortex cavitation. The method uses a hump-shaped pattern for the spectrum and predicts the centre frequency and lev...
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Johan Bosschers
A semi-empirical method is presented that predicts broadband hull-pressure fluctuations and underwater radiated noise due to propeller tip vortex cavitation. The method uses a hump-shaped pattern for the spectrum and predicts the centre frequency and lev...
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Pei Xu, Chao Wang, Liyu Ye, Chunyu Guo, Weipeng Xiong and Shen Wu
The presence of broken ice in the flow field around a propeller causes severe blade erosion, shafting, and hull vibration. This study investigates the performance of the propeller of a ship sailing in the polar regions under the propeller?ice non-contact...
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Julian Kimmerl, Paul Mertes and Moustafa Abdel-Maksoud
Methods to predict underwater acoustics are gaining increased significance, as the propulsion industry is required to confirm noise spectrum limits, for instance in compliance with classification society rules. Propeller?ship interaction is a main contri...
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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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Dongmei Yang, Zhiyuan Sun, Yi Jiang and Zeyang Gao
Based on the FVM (finite volume method) numerical method, the flow field around the stepped planing hull in Taunton series was simulated. According to the general procedure of numerical uncertainty analysis, the numerical uncertainty in the high-speed fl...
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Weidong Zhao, Bernt Johan Leira, Knut Vilhelm Høyland, Ekaterina Kim, Guoqing Feng and Huilong Ren
This paper presents a framework for structural analysis of icebreakers during ramming of first-year ice ridges. The framework links the ice-ridge load and the structural analysis based on the physical characteristics of ship?ice-ridge interactions. A shi...
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Yanlin Zou, Dakui Feng, Weihua Deng, Jun Yang and Hang Zhang
Waterjet?hull interaction is the hot point and research focus in the research of waterjet-propelled crafts. This paper presents numerical studies on the interaction between a waterjet system and a catamaran. Numerical simulations of both bare hull and se...
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Julian Kimmerl and Moustafa Abdel-Maksoud
Underwater radiated noise is part of the anthropogenic emissions into the environment and as such a pressing problem for the preservation of the marine ecosystem. In order to direct attention to the most relevant noise sources associated with ships it is...
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