Numerical study of fluid resonance of a two-dimensional heaving-free moonpool in a wide range of incident waves  

作　　者：Peng-lin Jing Guang-hua He Zheng-xiao Luan Chao-gang Liu Hao Yang 

机构地区：[1]School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China [2]School of Ocean Engineering,Harbin Institute of Technology,Weihai,Weihai 264209,China [3]Shandong Institute of Shipbuilding Technology,Weihai 264209,China

出　　处：《Journal of Hydrodynamics》2022年第4期647-664,共18页水动力学研究与进展B辑（英文版）

基　　金：the Fundamental Research Funds for the Central Universities(Grant No.HIT.OCEF.2021037);the Taishan Scholars Project of Shandong Province(Grant No.tsqn201909172);the University Young Innovational Team Program,Shandong Province(Grant No.2019KJN003).

摘　　要：The fluid resonance of a moonpool freely heaving in a beam sea is studied by an in-house constrained interpolation profile(CIP)code.Generally,the moonpool behaves as in the piston mode with a narrow opening.The numerical studies are carried out for a wide range of the incident waves,and a new secondary resonant region is identified in the low frequency region of the incident waves,besides the ordinary main resonant region.Numerical results demonstrate that the horizontal wave forces are significant in the secondary resonant region,although the resonant wave elevations are less remarkable than those of the main resonant region.It is concluded that the fluid resonance of the low frequency is excited mainly by the heave motion of the moonpool.Parameter studies of the moonpool draft and the gap width of the moonpool based on the fluid resonance are also performed.

关 键 词：Gap resonance low-frequency incident wave heave motion constrained interpolation profile(CIP) 

分 类 号：P742[天文地球—海洋科学] P743.2