Numerical study on the flow field inside and around a semi-submersible aquaculture platform
文献类型： 外文期刊
作者： Zhao, Yun-Peng 1 ; Liu, Hang-Fei 1 ; Bi, Chun-Wei 1 ; Cui, Yong 3 ; Guan, Chang-Tao 3 ;
作者机构： 1.Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China
2.Dalian Univ Technol, Ningbo Inst, Ningbo 315016, Peoples R China
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Qingdao 266071, Peoples R China
关键词： Flow field; Porous media; Semi-submersible aquaculture platform; k-omega turbulence model
期刊名称：APPLIED OCEAN RESEARCH （ 影响因子：2.979； 五年影响因子：3.38 ）
ISSN： 0141-1187
年卷期： 2021 年 115 卷
页码：
收录情况： SCI
摘要： The study of flow velocity distribution inside and around a semi-submersible aquaculture platform is extremely important for the living environment of marine fish, especially in the open sea. Therefore, a method combining porous media and rigid walls is established to analyze the flow patterns inside and around a semi-submersible aquaculture platform. In the present study, the shear stress transport k-omega turbulence model is chosen to describe the flow, and the governing equations are solved by using the finite volume method. The fish nets and main frame, including pontoons, columns, and braces, are modeled by porous media and rigid wall conditions, respectively. The accuracy of the numerical model is verified, and the results show that the experimental values agree with the calculated values. By comparing the flow field of aquaculture platforms with and without fish nets, it can be concluded that fish nets play a vital role in the attenuation of flow velocity. In addition, vortices exist near the wall of the aquaculture platform. The risk of resonance will increase when the frequency of the vortex shedding is close to the natural frequency of the structure, which should be avoided in practical engineering.
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