Study on Transient Gap Resonance with Consideration of the Motion of Floating Body  

作　　者：GAO Jun-liang LYU Jing WANG Jing-hua ZHANG Jian LIU Qian ZANG Jun ZOU Tao 

机构地区：[1]School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China [2]Key Laboratory of Port,Waterway and Sedimentation Engineering of MOT,Nanjing Hydraulic Research Institute,Nanjing 210029,China [3]Department of Civil and Environmental Engineering,the Hong Kong Polytechnic University,Hong Kong,China [4]Centre for Infrastructure,Geotechnical and Water Engineering(IGWE),Department of Architecture and Civil Engineering,University of Bath,BA27AY,U.K [5]Shandong Provincial Key Laboratory of Ocean Engineering,Qingdao 266100,China

出　　处：《China Ocean Engineering》2022年第6期994-1006,共13页中国海洋工程（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51911530205);the Natural Science Foundation of Jiangsu Province (Grant Nos. BK20201455 and BK20210885);the Key Laboratory of Port;Waterway and Sedimentation Engineering of MOT (Grant No. YK222001-2);the Shandong Provincial Key Laboratory of Ocean Engineering (Grant No. kloe202010);the Key R&D Projects in Guangdong Province (Grant No. 2020B1111500001);the Qing Lan Project of Jiangsu Universities;the Royal Society (Grant No. IECNSFC181321) for providing partial support for this work

摘　　要：In this paper, the transient fluid resonance phenomenon inside a narrow gap between two adjacent boxes excited by the incident focused waves with various spectral peak periods and focused wave amplitudes is simulated by utilizing the open-sourced computational fluid dynamics software, Open FOAM. The weather-side box is allowed to heave freely under the action of waves, and the lee-side box keeps fixed. This paper mainly focuses on how both the spectral peak period and the focused wave amplitude affect the free-surface amplification inside the gap, the motion of the weather-side box, and the wave loads(including the vertical and the horizontal wave forces) acting on both boxes.For comparison, another two-box system with both boxes fixed is also considered as a control group. It is found that the motion of the weather-side box significantly changes the characteristics of the transient gap resonance, and it would cause that the fluid resonant period becomes 1.4-1.6 times that of the two-box system with both boxes fixed.All the concerned physical quantities(i.e., the free-surface amplification in the gap, the motion of the weather-side box, the wave loads) are found to closely depend on both the spectral peak period and the focused wave amplitude.

关 键 词：transient gap resonance focused waves free-surface amplification wave loads heave motion OpenFOAM 

分 类 号：O35[理学—流体力学] TV139.2[理学—力学]