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Dynamic deformation of the floating collar of a net cage under the combined effect of waves and current

文献类型： 外文期刊

作者： Huang, Xiao-Hua 1 ; Guo, Gen-Xi 2 ; Tao, Qi-You 2 ; Hu, Yu 2 ; Liu, Hai-Yang 2 ; Wang, Shao-Min 2 ; Hao, Shuang-Hu 3 ;

作者机构： 1.Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China

2.Guangdong Cage Engn Res Ctr, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China

3.Offshore Oil Engn Co Ltd, Tianjin 300452, Peoples R China

关键词： Dynamic deformation; Floating collar; Net cage; Irregular waves

期刊名称：AQUACULTURAL ENGINEERING （ 影响因子：3.281； 五年影响因子：3.727 ）

ISSN： 0144-8609

年卷期： 2018 年 83 卷

页码：

收录情况： SCI

摘要： In this study, a numerical model was established to simulate the dynamic behavior of a floating net cage in waves and current, based on the finite element method. To validate the numerical model, we considered a case based on the motions of the net cage under regular waves and current, where we calculated and compared the simulated results. The comparison of the results indicated good agreement. We calculated the dynamic deformation of the floating collar of the net cage under regular/irregular waves and current, and we analyzed the effects of the net, strong waves and current, and the length of the mooring line on the cage collar deformation. The results indicated that the deformation of the floating collar with a net was much greater than that without a net. The collar deformation became larger as the wave height or current velocity increased. Therefore, in order to reduce the risk of local collar failure due to plastic deformation, adding a casing pipe in the position of the mooring line connection point on the floating collar could greatly enhance the bearing capacity of the cage collar under severe sea conditions. In addition, increasing the length of the mooring line would help to decrease the mooring line tension and further reduce deformation of the cage collar.

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