Study on the interaction between solitary waves and the non-submerged marine structures based on the SPH model

Lin Jinbo; Mao Hongfei; Tian Zhenglin; Ji Ran

doi:10.12284/hyxb2022045

Volume 44 Issue 6

Jul. 2022

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Lin Jinbo，Mao Hongfei，Tian Zhenglin, et al. Study on the interaction between solitary waves and the non-submerged marine structures based on the SPH model[J]. Haiyang Xuebao，2022, 44(6)：116–127 doi: 10.12284/hyxb2022045

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Study on the interaction between solitary waves and the non-submerged marine structures based on the SPH model

doi: 10.12284/hyxb2022045

1.
College of Ocean Engineering, Guangdong Ocean University, Zhanjiang 524088, China
2.
Maritime College, Guangdong Ocean University, Zhanjiang 524088, China

Funds: The study is financially supported by the National Natural Science Foundation of China (No. 52001071), Marine Youth Talent Innovation Project of Zhanjiang(2021E05009), Non-funded Science and Technology Research Plan Project of Zhanjiang(2021B01160，2021B01033), Research Start-up Fund Project of Guangdong Ocean University(060302072103， 060302072003).

Received Date: 2021-05-23
Rev Recd Date: 2021-10-20

Available Online: 2022-07-13

Publish Date: 2022-07-13

Abstract

Abstract

To investigate the characteristics of the flow field around non-submerged structures under solitary waves, a numerical model of the interaction between solitary waves and marine structures is established based on the meshless SPH method. By calculating and analyzing the characteristics of the wave surface, velocity, vorticity, and structure force under different amplitude solitary waves, the influence of relative wave height on the flow field around the non-submerged structure was explored. The results show that the flow field characteristics are closely related to the relative wave height. With a little relative wave height, the wave surface, velocity, vorticity, and structure force are smooth while the flow field fluctuate around the structure due to that the wave crest climbs to the top of the structure and collide with the water in the tank after passing the structure when the relative wave height is large than 0.2. The fluctuation amplitude of wave surface, velocity, vorticity and structure force increased with the increase of relative wave height, resulting in a more complex flow field. Meanwhile, the horizontal and vertical negative force of the structure are larger, the distribution of vorticity around the structure gradually develops to the depth and downstream direction.
- solitary wave,
- non-submerged,
- SPH,
- numerical calculation

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References

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