文献类型：期刊文献

英文题名：Characteristics of Higher Harmonic Forces on Submerged Horizontal Cylinders with Sharp and Round Corners

作者：Mao, Hongfei[1,2];Zeng, Jinwen[3];Wu, Guanglin[1];Chen, Hanqing[1];Zhang, Shuqin[4];Yang, Yuanting[1,3];Yang, Qinru[5]

机构：[1]Guangdong Ocean Univ, Coll Ocean Engn & Energy, Zhanjiang 524088, Peoples R China;[2]Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[5]Hengli Shipbuilding Co Ltd, Technol Dept, Dalian 116300, Peoples R China

年份：2024

卷号：12

期号：9

外文期刊名：JOURNAL OF MARINE SCIENCE AND ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001323485400001)、、WOS

基金：This work was financially supported by the National Key Research and Development Program of China [Grant number 2023YFC3008200], the National Natural Science Foundation of China [Grant numbers 52001071 and 42201029], the Guangdong Basic and Applied Basic Research Foundation [Grant numbers 2023A1515010890 and 2022A1515240039], and the Youth Innovative Talents Program of Guangdong Colleges and Universities [Grant number 2022KQNCX026].

语种：英文

外文关键词：nonlinear waves; submerged horizontal cylinder; hydrodynamic characteristics; vortex effects

外文摘要：In this study, a two-phase flow numerical wave tank model based on the viscous flow theory was applied to conduct computational research on the interaction between waves and submerged horizontal cylinders. The research objective is to reveal the hydrodynamic characteristics of nonlinear loads on submerged horizontal cylinders with a focus on vortex effects. The influence of the sharp and round corners of cross-sections on the wave forces on cylinders was summarized. The reasons for the characteristics of the wave forces were explained by analyzing the flow field distribution around the cylinder and decomposing the wave forces into inertial and drag forces. This study found that under the various incident wave amplitudes, the section corner and aspect ratio have significant impacts on each frequency component of the horizontal and vertical wave forces. The distribution of the vorticity field shows that the vortex effects lead to the differences between the loads on the cylinder under different cross-sectional corners and aspect ratios. The characteristics of inertial forces and drag forces on the cylinders were given by comparing and analyzing the cases with different sectional sharp and round corners. The inertia and drag coefficients were obtained by solving Morison's equation. Under various Kc and Re numbers, the maximum values of the inertia and drag coefficients obtained are significantly different from those for submerged cylinders under oscillatory flow action.