Investigation on Effects of Vertical Degree of Freedom on Gap Resonance Between Two Side-by-Side Boxes Under Wave Actions  

作　　者：HE Zhi-wei GAO Jun-liang SHI Hua-bin ZANG Jun CHEN Hong-zhou LIU Qian 

机构地区：[1]School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China [2]State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering,University of Macao,Macao 999078,China [3]Centre for Infrastructure,Geotechnical and Water Engineering(IGWE),Department of Architecture and Civil Engi-neering,University of Bath,BA27AY,UK [4]School of Civil Engineering and Architecture,Northeast Electric Power University,Jilin 132012,China

出　　处：《China Ocean Engineering》2022年第3期403-412,共10页中国海洋工程（英文版）

基　　金：This research is financially supported by the National Natural Science Foundation of China(Grant Nos.51911530205 and 51809039);the Natural Science Foundation of Jiangsu Province(Grant No.BK20201455);the Natural Science Foundation of the Jiangsu Higher Education Institutions(Grant No.20KJD170005);the Qing Lan Project of Jiangsu Universities.The work is also partially supported by UK EPSRC(Grant No.EP/T026782/1);the Royal Academy of Engineering(Grant No.UK-CIAPP/73);the Royal Society(Grant No.IEC\NSFC\181321).

摘　　要：The possible wave resonance in the narrow gap formed by the parallel arrangement of ships will lead to the sharp increase of wave loads and the rapid growth of motion response.The fluid resonance inside a narrow gap between two side-by-side boxes is investigated numerically based on an open-source CFD package,OpenFOAM.The upstream box remains fixed,while the downstream box is allowed to heave freely under wave actions.This work aims to examine the influence of the motion of the downstream box on the fluid resonant behaviors inside the gap.The hydrodynamic behaviors considered include the wave height inside the gap,the heave displacement,and the reflection,transmission,and energy loss coefficients.Gao et al.(2021)reported the influence of the motion of the upstream box on gap resonant behaviors.For comparative study,some results of Gao et al.(2021)are also presented in this work.It is found that the heave motion of any box in the two-box system leads to a smaller resonant wave height amplification and a larger fluid resonance frequency.The frequency at which the maximum heave displacement of the downstream box occurs is less than the fluid resonant frequency.The heave motion of any box in the two-box system results in a larger reflection coefficient and a smaller energy loss coefficient.

关 键 词：gap resonance wave height amplification heave motion OPENFOAM 

分 类 号：P75[天文地球—海洋科学] U661.4[交通运输工程—船舶及航道工程]