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Jiayu Huang, Feng Diao, Shifeng Ding, Sen Han, Pentti Kujala and Li Zhou
In previous studies of ship?ice interactions, most studies focused on ship?level ice interactions, overlooking potential rafted ice conditions in extreme ice conditions. The purpose of this study is to develop a numerical model for predicting ship resist...
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Haisu Sun, Xuan Ni, Yuxin Zhang, Kang Chen and Baoyu Ni
Ship resistance increases significantly when navigating a brash ice channel. In this study, the numerical method is applied to predict the full-scale ship resistance of bulk carriers in brash ice channels. The viscous flow computational fluid dynamics (C...
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Bao-Yu Ni, Hongyu Wei, Zhiyuan Li, Bin Fang and Yanzhuo Xue
Ships sailing through cold regions frequently encounter floe ice fields. An air-bubble system that reduces friction between the hull and ice floes is thus considered useful for the reduction of ice-induced resistance. In this study, a numerical analysis ...
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Zhongyu Chen, Weidong Zhao, Zhanyang Chen, Guoqing Feng, Huilong Ren and Hongbin Gui
To address global challenges, research on the safety of polar navigation is indispensable. However, most of studies focus on traditional surface vessels, with few research studies on submarine. The dynamic response of submarine during surface navigation ...
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Vadim K. Goncharov
This article contains the analytical model of the drift of a separate ice field under the action of wind and current, in which velocities and directions can vary over time. The model takes into account the mass of ice, added mass of seawater, and the eff...
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Bao-Yu Ni, Zi-Wang Chen, Kai Zhong, Xin-Ang Li and Yan-Zhuo Xue
In most previous ice?ship interaction studies involving fluid effects, ice was taken as unbreakable. Building breakable level ice on water domain is still a big challenge in numerical simulation. This paper overcomes this difficulty and presents a numeri...
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José Enrique Gutiérrez-Romero, Samuel Ruiz-Capel, Jerónimo Esteve-Pérez, Blas Zamora-Parra and Juan Pedro Luna-Abad
The real resistance that a ship must face when it is navigating in ice floes is the key factor for knowing the necessary power and the required engine size. The aim of this work is to provide valuable data to help other research in which numerical framew...
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Fang Li and Luofeng Huang
Apart from breaking level ice, polar ships can interact with broken ice in various scenarios. In recent years, computational simulation models have increasingly been used for the evaluation of ship operability under broken ice conditions, presenting some...
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Guiwen Liu, Jie Liu, Neng Wang, Xuanyi Xue and Youjia Tan
Fire has significant effects on the residual resistance of steel structures. It is necessary to accurately clarify its effects on Q690 HSS plate girders, which have been widely used. In this paper, the ultimate resistance and effective service resistance...
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Jianlin Hu, Caixin Sun, Xingliang Jiang, Qing Yang, Zhijin Zhang and Lichun Shu
In the current study, a multi-arc predicting model for DC critical flashover voltage of iced and pre-contaminated long insulator strings under low atmospheric pressure is developed. The model is composed of a series of different polarity surface arcs, ic...
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Anna Cherkashina,Alexii Rassokha,Igor Ryshchenko,Olga Komarova
Pág. 56 - 66
A new composition of the environmentally friendly water-based casein adhesive glue with the increased adhesion to the substrate (glass, polyethylene terephthalate, etc.) and the improved water resistance has been developed and explored. The glue is easil...
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Alan W. Rempel and Alexandra R. Rempel
Earth-based building materials are increasingly valued in green design for their low embodied energy, humidity-buffering ability, and thermal stability. These materials perform well in warm dry climates, but greater understanding of long-term durability ...
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Yu Lu, Zhuhao Gu, Shewen Liu, Chunxiao Wu, Wu Shao and Chuang Li
The Energy Efficiency Design Index (EEDI) has been applied to ship carbon emission standards since 2013, ice ships subject to the Finnish Swedish Ice Class Rules (FSICR) also need to meet the requirements of EEDI. In this study, the engine power requirem...
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Li Zhou, Feng Diao, Ming Song, Yue Han and Shifeng Ding
As a key parameter, icebreaking capability is often used to judge whether a polar ship could navigate in level ice at a certain speed. This paper presents two methods to calculate icebreaking capability. The first one is a static method based on the esti...
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Nellie Tumel and Larisa Zotova
The diagnosis of the geoecological state of natural landscapes during the economic development of the permafrost zone should be established by assessing destructive cryogenic processes. Furthermore, the geoecological state should be considered in terms o...
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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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Yaxian Hu, Xianwen Li, Simin Jiang, Junying Chen and Baowen Yan
Freeze?thaw has been proved to be a simple, cost-effective, and highly efficient manner to purify wastewater. However, it remains unclear how microbial compositions and functions in meltwater differentiate over progressive thawing and how such difference...
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Yukui Tian, Dongbao Yang, Xuhao Gang, Chaoge Yu, Shunying Ji and Qianjin Yue
The determination of ice loads on polar vessels and offshore structures is important for ice-resistant design, safe operation, and management of structural integrity in ice-infested waters. Physical model testing carried out in an ice tank/basin is usual...
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Andrey Vladimirovcih Blinov, Dmitry Aleksandrovich Kostyukov, Maria Anatolevna Yasnaya, Pavel Aleksandrovich Zvada, Lyudmila Pavlovna Arefeva, Valery Nikolaevich Varavka, Roman Aleksandrovich Zvezdilin, Alexander Aleksandrovich Kravtsov, David Guramievich Maglakelidze, Alexey Borisovich Golik, Alexey Alekseevich Gvozdenko, Natalia Viatcheslavovna Lazareva, Elena Nikolaevna Kushch, Vadim Nikolaevich Goncharov, Maxim Andreevich Kolodkin, Mohammad Ali Shariati and Andrey Ashotovich Nagdalian
This paper presents the results of the development of a technology to obtain a nanostructured coating for the protection of overhead wires and the possibility of their application in the electric power industry. The paper provides an analysis of availabl...
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Pangpang Chen, Jueyi Sui, Guangxue Cao and Tiejie Cheng
Ice jam is a unique hydrological phenomenon in rivers in cold regions. The appearance of an ice jam in a river results in an increase in the wetted perimeter of the flow cross-section, and thus an increase in flow resistance as well as water level. It ma...
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