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Bingjun Gao, Mingze Li, Chulin Yu and Yan Li
Nuclear power plants applying for license renewal are required to undertake a fatigue assessment of various components, which demands the fast calculation of transient thermal stress of the fatigue-sensitive components such as surge lines. In this study,...
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Chenglin Zhang, Jincheng Xu, Jianjun Shan, Andong Liu, Mingchao Cui, Huang Liu, Chongwu Guan and Shuangyi Xie
To maximize the utilization of ocean resources, shorten the return period of investment and directly supply energy to the fishing cage, this paper performs a preliminary study for a state-of-the-art concept integrating a floating offshore wind turbine wi...
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Yunpeng Zhao, Changtao Guan, Chunwei Bi, Hangfei Liu and Yong Cui
A series of physical model experiments was performed to investigate the hydrodynamic responses of a semi-submersible offshore fish farm in waves. The structural configuration of the fish farm primarily refers to that of the world?s first offshore fish fa...
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Mingsheng Chen, Lenan Yang, Xinghan Sun, Jin Pan, Kai Zhang, Lin Lin, Qihao Yun and Ziwen Chen
Evidence points to increasing the development of floating wind turbines to unlock the full potential of worldwide wind-energy generation. Barge-type floating wind turbines are of interest because of their shallow draft, structural simplicity, and moonpoo...
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Alana Pols, Eric Gubesch, Nagi Abdussamie, Irene Penesis and Christopher Chin
This investigation focuses on the modelling of a floating oscillating water column (FOWC) wave energy converter with a numerical code (ANSYS AQWA) based on potential flow theory. Free-floating motions predicted by the numerical model were validated again...
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Magnus Thorsen Bach-Gansmo, Stian Kielland Garvik, Jonas Bjerg Thomsen and Morten Thøtt Andersen
The catenary mooring system is a well recognized station keeping method. However, there could be economical and environmental benefits of reducing the footprint. In the last decades, more focus has been given to synthetic mooring lines and different moor...
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Yushun Lian, Fan Zhong, Jinhai Zheng, Wenxing Chen, Gang Ma, Shan Wang and Solomon C. Yim
The influence of mooring systems with lines of different material on the dynamic response of a floating wind turbine is studied using a 5 MW OC4-DeepCwind semi-submersible wind turbine as a representative prototype in this study. Two types of mooring sys...
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Yuchao Wang, Yinsong Qu, Shiquan Zhao, Ricardo Cajo and Huixuan Fu
In this paper, a solution to the problem of following a curved path for underactuated unmanned surface vehicles (USVs) with unknown sideslip angle and model uncertainties is studied. A novel smooth sliding mode control (SSMC) based on a finite-time exten...
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Shiqi Liu, Zhenju Chuang, Kai Wang, Xin Li, Xin Chang and Lixun Hou
The full exploitation of offshore wind resources can essentially satisfy the massive energy demand. The realization and application of ultra-high-power offshore wind turbines are crucial to achieving full use of deep-sea wind energy and reducing the cost...
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Tobias Martin and Hans Bihs
During the operation of moored, floating devices in the renewable energy sector, the tight coupling between the mooring system and floater motion results in snap load conditions. Before snap events occur, the mooring line is typically slack. Here, the me...
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Kung-Teck Wong,Mazura @ Mastura binti Muhammad,Norazilawati binti Abdullah,Analisa Hamdan
Pág. pp. 130 - 143
The integration of Information and Communication Technology (ICT) in the classroom for learning is becoming important to improve student engagement and interaction. This is in line with the educational transformation towards achieving Higher Educat...
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Zhixin Zhao, Xin Li, Wenhua Wang and Wei Shi
An initial design of the platform for the moderate water depth (100 m) is performed by upscaling of an existing 5 MW braceless semi-submersible platform design to support the DTU (Danish University of Science and Technology) 10 MW wind turbine. To invest...
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Yingkai Xia, Zhemin Huang, Kan Xu, Guohua Xu and Ye Li
This paper proposes a novel three-dimensional trajectory tracking control methodology for a heterogeneous X-rudder autonomous underwater vehicle (XAUV) that can achieve finite-time convergence, complex actuator dynamics handling, and energy-efficient opt...
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Ji-Hong Li, Hyungjoo Kang, Min-Gyu Kim, Mun-Jik Lee, Gun Rae Cho and Han-Sol Jin
In this paper, we present a 3D formation control scheme for a group of torpedo-type underactuated autonomous underwater vehicles (AUVs). These multiple AUVs combined with an unmanned surface vessel (USV) construct a sort of star-topology acoustic communi...
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Mingzheng Wen, Huaibo Zhang, Shoujun Wang, Zhiwen Shang, Shaotong Zhang, Peng Yang and Hong Wang
The shelly chenier is a dike-like accumulation formed by waves, currents, and other hydrodynamic forces pushing the shells and their debris in the intertidal zone to the high tide line. It is a special type of coastal dike. The shelly chenier located in ...
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Changqing Jiang, Ould el Moctar and Thomas E. Schellin
Within the framework of Space@Sea project, an articulated modular floating structure was developed to serve as building blocks for artificial islands. The modularity was one of the key elements, intended to provide the desired flexibility of additional d...
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Joseph Kim, Enda Murphy, Ioan Nistor, Sean Ferguson and Mitchel Provan
A numerical study was conducted to characterize the probability and intensity of storm surge hazards in Canada?s western Arctic. The utility of the European Centre for Medium-Range Weather Forecasts Reanalysis 5th Generation (ERA5) dataset to force numer...
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Hung-Jie Tang, Chai-Cheng Huang and Ray-Yeng Yang
This study aims to investigate the influence of fishnet mesh size on a floating platform. A self-developed, time-domain numerical model was used for the evaluation. This model is based on potential flow theory, uses the boundary element method (BEM) to s...
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Jean T. Ellis, Michelle E. Harris, Mayra A. Román-Rivera, J. Brianna Ferguson, Peter A. Tereszkiewicz and Sean P. McGill
Over one-third of the Earth?s population resides or works within 200 km of the coast. The increasing threat of coastal hazards with predicted climate change will impact many global citizens. Coastal dune systems serve as a natural first line of defense a...
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Dongxue Li, Zhiguo Chen, Jianming Ling
Pág. 2182 - 2194
Short-term surge in the spring thaw of liquid water is one of the root causes of structural performance of subgrade weakening seasonal frozen region. Ice and water phase transition changed the strength and deformation of subgrade. Especially in wet soil ...
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