文献类型：期刊文献

英文题名：Numerical Study on the Wave Loads of the Semi-Submersible Structure Exerted by a Solitary Wave

作者：Lin, Jin-bo[1,2];Liu, Yang[1];Zhou, Zhong-bing[1];Mao, Hong-fei[1,2];Wu, Guang-lin[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean Engn & Energy, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China

年份：2026

卷号：40

期号：3

起止页码：713

外文期刊名：CHINA OCEAN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001791078300001)、、Scopus(收录号：2-s2.0-105041275760)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 52001071), the Basic and Applied Basic Research Foundation of Guangdong Province (Grant No. 2025A1515010961), Special Fund Competition Allocation Project of Guangdong Science and Technology Innovation Strategy (Grant No. 2023A01022), the Doctor Initiate Projects of Guangdong Ocean University (Grant No. R20068), the Fund of Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching (Grant No. 2023B1212030003), Student Innovation Team Project of Guangdong Ocean University (Grant No. CXTD2023012), and Guangdong Provincial College Students' Innovation and Entrepreneurship Training Program (Grant No. S202510566061).

语种：英文

外文关键词：wave-structure interaction; semi-submersible structures; extreme waves; wave loads

外文摘要：Wave loads are a critical factor influencing the safety of semi-submersible offshore platforms (SSOPs). However, research on wave loads acting on semi-submerged structures remains limited due to complex large-amplitude motions, such as green water and wave breaking. To investigate the wave loads on an SSOP induced by a solitary wave, a meshless numerical model is developed by integrating the smoothed particle hydrodynamics (SPH) method, artificial viscosity, and Rayleigh theory. The model's accuracy is validated by comparing simulated wave heights and wave loads against experimental data and exact analytical solutions. The maximum absolute error in the wave height peak is 0.037, corresponding to a relative error of 7.4%, while the maximum relative error in wave loads is 54% (absolute error: 0.37 N). Although the relative error in the wave loads appears large, primarily due to the small magnitude of the measured loads, the numerical results remain in good agreement with both the experimental data and the exact solutions. Flow velocities around the structure increase with higher wave heights, exceeding 2 m/s when wave heights surpass 0.2 m, owing to complex wave dynamics. Distinct vortices form both upstream and downstream of the structure, intensifying with increasing wave height. The peak magnitudes of horizontal forces (both positive and negative) decrease with greater water depth, whereas vertical forces increase. Notably, the wave load amplitude (WLA) in the z-direction significantly exceeds that in the x-direction, reaching a maximum value of 0.799.