Characteristics of Higher Harmonic Forces on Submerged Horizontal Cylinders with Sharp and Round Corners

Mao, Hongfei1,2; Zeng, Jinwen3; Wu, Guanglin1; Chen, Hanqing1; Zhang, Shuqin4; Yang, Yuanting1,3; Yang, Qinru5

2024-09-01

10.3390/jmse12091636

JOURNAL OF MARINE SCIENCE AND ENGINEERING   影响因子和分区

2077-1312

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.

nonlinear waves submerged horizontal cylinder hydrodynamic characteristics vortex effects

SCI

英语

其他

National Natural Science Foundation of China["52001071","42201029"] ; Guangdong Basic and Applied Basic Research Foundation["2023A1515010890","2022A1515240039"] ; Youth Innovative Talents Program of Guangdong Colleges and Universities[2022KQNCX026] ; null[2023YFC3008200]

Engineering ; Oceanography

Engineering, Marine ; Engineering, Ocean ; Oceanography

WOS:001323485400001

MDPI

Web of Science

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

Mao, Hongfei,Zeng, Jinwen,Wu, Guanglin,et al. Characteristics of Higher Harmonic Forces on Submerged Horizontal Cylinders with Sharp and Round Corners[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2024,12(9).

Mao, Hongfei.,Zeng, Jinwen.,Wu, Guanglin.,Chen, Hanqing.,Zhang, Shuqin.,...&Yang, Qinru.(2024).Characteristics of Higher Harmonic Forces on Submerged Horizontal Cylinders with Sharp and Round Corners.JOURNAL OF MARINE SCIENCE AND ENGINEERING,12(9).

Mao, Hongfei,et al."Characteristics of Higher Harmonic Forces on Submerged Horizontal Cylinders with Sharp and Round Corners".JOURNAL OF MARINE SCIENCE AND ENGINEERING 12.9(2024).