The deformation characteristics and flow field around knotless polyethylene netting based on fluid structure interaction (FSI) one-way coupling
The deformation characteristics and flow field around knotless polyethylene netting based on fluid structure interaction (FSI) one-way coupling
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基于流固耦合（FSI）单向耦合的无结聚乙烯网周围的变形特征和流场
DOI：
10.1016/j.aaf.2020.07.012
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发表时间：
2020-08
影响因子：
--
通讯作者：
Hu Fuxiang
中科院分区：
文献类型：
--
作者：
Zou Baiqiang;Thierry Nyatchouba Nsangue Bruno;Tang Hao;Xu Liuxiong;Dong Shuchuang;Hu Fuxiang
无结聚乙烯（PE）网具因其优异的水动力性能和低廉的成本而被广泛应用于渔业。网片变形和周围流场分布是决定网片运动水动力特性的重要因素。为了研究实度比和攻角对阻力、网片变形和网片流场分布的影响，采用剪切应力湍流（SST）k-Ω模型和大变形非线性结构有限元模型相结合的单向耦合流固耦合（FSI）模型进行了数值模拟。结果表明，在本数值模型和水槽试验数据中发现的平行阻力和法向阻力之间的差异分别为9.17%和11.58%。对于网1、2和3，在不同流速和攻角下倾斜水动力阻力的平均相对误差分别为8.35%、6.69%和5.37%。研究结果表明，基于流固耦合单向耦合的数值模拟方法可以用于研究网片上的水动力。流场模拟结果表明，在不同攻角下，网片对水流速度有明显的抑制作用，网片下游存在较大的速度抑制区。这些结果揭示了由于网状尾流引起的湍流的存在。结果表明，等效应力和总变形随流速的增大而增大，随密实度比的减小而减小。
Knotless polyethylene (PE) netting is widely used in fisheries because of its excellent hydrodynamic performance and low cost. Netting deformation and the surrounding flow field distribution play an important role in determining the hydrodynamic characteristics of netting in moving water. In order to investigate the effect of solidity ratio and attack angle on drag, netting deformation, and flow field distribution through the netting, a fluid-structure interaction (FSI) model based on a one-way coupling combining the shear stress turbulent (SST) k-omega model and the large deformation nonlinear structural finite element model was evaluated. Our results showed the difference between the parallel and normal drag forces found in the present numerical model and experimental flume tank data were 9.17% and 11.58%, respectively. The mean relative error in the inclined hydrodynamic drag for different flow velocities and attack angles was 8.35%, 6.69%, and 5.37% for the nettings 1, 2, and 3, respectively. These results show that the present numerical simulation based on FSI one-way coupling can be used to examine hydrodynamic forces on netting. The flow simulation results show that there is a noticeable flow velocity decrease through the netting and a rather large velocity reduction region downstream from the netting for different attack angles. These results reveal the existence of turbulent flow due to the netting wake. It was found that the equivalent stress and total deformation increase as the flow velocity increases and solidity ratio decreases.
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影响因子：
1.6
作者：
Hao Tang;F. Hu;Liuxiong Xu;Shuchuang Dong;Cheng Zhou;Xuefang Wang
通讯作者：
Hao Tang;F. Hu;Liuxiong Xu;Shuchuang Dong;Cheng Zhou;Xuefang Wang
多孔介质模型对渔机网周围流动的数值模拟
影响因子：
5
作者：
Zhao Yun-Peng;Bi Chun-Wei;Dong Guo-Hai;Gui Fu-Kun;Cui Yong;Guan Chang-Tao;Xu Tiao-Jian
通讯作者：
Xu Tiao-Jian
影响因子：
3.7
作者：
Tang H;Xu L;Hu F
通讯作者：
Hu F
DOI：
10.1115/1.4028224
发表时间：
2013-06
影响因子：
1.6
作者：
L. Gansel;Østen Jensen;P. Endresen;M. Føre
通讯作者：
L. Gansel;Østen Jensen;P. Endresen;M. Føre
DOI：
--
发表时间：
1979
期刊：
The Astrophysical Journal
影响因子：
--
作者：
P. Milne
通讯作者：
P. Milne