文献类型：期刊文献

英文题名：Verification of solitary wave numerical simulation and case study on interaction between solitary wave and semi-submerged structures based on SPH model

作者：Lin, Jinbo[1,2];Hu, Lili[1];He, Yanli[1];Mao, Hongfei[1,2];Wu, Guanglin[1];Tian, Zhenglin[1];Zhang, Dandan[3]

机构：[1]Guangdong Ocean Univ, Coll Ocean Engn & Energy, Zhanjiang, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang, Peoples R China;[3]Powerchina Hebei Elect Power Engn CO Ltd, Tech Ctr, Shijiazhuang, Peoples R China

年份：2023

卷号：10

外文期刊名：FRONTIERS IN MARINE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001129261600001)、、Scopus(收录号：2-s2.0-85180709754)、WOS

基金：The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was financially supported by the National Natural Science Foundation of China (Grant No. 52001071); the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2023A1515010890, 2022A1515240039); the Special Fund Competition Allocation Project of Guangdong Science and Technology Department (Grant No. 2021A05227); the Marine Youth Talent Innovation Project of Zhanjiang (Grant No. 2021E05009, 2021E05010); Non-funded Science and Technology Research Program Project of Zhanjiang (Grant No. 2021B01160, 2021B01416); the Doctor Initiate Projects of Guangdong Ocean University (No. 060302072103, R20068); Innovative Team for Structural Optimization of Ocean and Hydraulic Engineering(CXTD2023012).

语种：英文

外文关键词：wave structure interaction; numerical simulation; solitary waves; semisubmersible structure; SPH

外文摘要：Due to significant influence on the safety of marine structures, the interaction between extreme waves and structures is a crucial area of study in marine science. This paper focus on the verification of a solitary wave meshless SPH model and the application of the model on the interaction between solitary waves and semi-submersible structures. A solitary wave propagation model is established based on the SPH method combined with Rayleigh solitary wave theory, quintic kernel function, artificial viscosity, and Symplectic Method. The accuracy of the model is validated by comparing the calculated wave height with the theoretical value. The calculated results with relative particle spacing H0/d0 >= 20 are in good agreement with the analytical solution. The simulated solitary wave is also quite stable with a maximum L2 error 0.016. Therefore, the proposed SPH model can accurately simulate the propagation of the solitary waves. A case study on the interaction between solitary waves and semi-submersible platforms is conducted. The results show that the interaction between solitary waves and semi-submersible causes two double peaks with wave heights of 0.398 m and 0.410 m, respectively, induced by overtopping at the center of the platform. The wave transmission coefficient Kt is 0.880 due to that the solitary wave height reduces from 0.498 m to 0.438 m after the solitary wave propagates through the semi-submersible structure. In addition, the solitary wave induces significant vertical wave loads of the structure with a load amplitude of 0.688, while horizontal wave loads are relatively small with a load amplitude of 0.089. The solitary wave arrived the structure induces the upstream and downstream overtopping and forms a hydraulic jump leading to the complex flow field. The maximum velocity at the top and bottom of the structure is 2.2 m/s and 0.8 m/s respectively. Positive or negative vortex are formed at the bottom of the leading edge, top and downstream of the structure with the maximum intensity 28 s-1 and -40 s-1. In a word, the meshless SPH model can conveniently and accurately simulate the propagation of the solitary waves, and be applied to the investigation of the wave height, velocity, vorticity, wave load, and wave breaking of the interaction between solitary waves and structures in ocean engineering.