垂荡双箱间窄缝水动力共振特性  

Characteristics of hydrodynamic resonance in a narrow gap between two heaving boxes

作　　者：何广华 荆芃霖 王威 张婧文 金瑞佳 刘涛 HE Guanghua;JING Penglin;WANG Wei;ZHANG Jingwen;JIN Ruijia;LIU Tao(School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China;School of Ocean Engineering,Harbin Institute of Technology(Weihai),Weihai 264209,China;Shandong Institute of Shipbuilding Technology,Weihai 264209,China;Tianjin Research Institute of Water Transport Engineering,M.O.T,Tianjin 300450,China)

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]哈尔滨工业大学(威海)海洋工程学院,山东威海264209 [3]山东船舶技术研究院,山东威海264209 [4]交通运输部天津水运工程科学研究院,天津300450

出　　处：《哈尔滨工程大学学报》2021年第11期1588-1595,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51579058);山东省重点研发计划(公益类专项)项目(2019GHY112024);天津大学水利工程仿真与安全国家重点实验室开放基金项目(HESS-1907);中央高校基本科研业务费专项资金项目(HIT.NSRIF.202017)。

摘　　要：为使双箱共振问题更加接近实际工程情况,本文将传统的固定双箱改为可自由垂荡运动的双箱。通过水池实验研究了垂荡运动对双箱共振的影响,并基于重叠网格技术,通过STAR-CCM+建立了数值波浪水池,分析了双箱在不同入射波频率下的运动及双箱窄缝水动力共振响应特性。结果表明:本文所用实验模型与数值模型均能准确预报不同频率入射波条件下自由垂荡双箱运动共振问题,能较好地反映箱体运动和水动力共振特性;自由垂荡双箱与固定双箱相比,窄缝的共振区间发生偏移,共振频率增大且振幅值减小;在双箱共振的研究中考虑箱体的垂荡响应可使问题更加接近现实情况,对于研究垂荡响应的多浮体海洋工程结构物具有积极意义。To make a gap resonance problem closer to real engineering situations, in this study, the traditional double box fixed into two boxes going into free heave motion is changed. A water tank experiment was performed to study the influence of heave freedom on the double-box resonance, and a numerical wave tank was established based on the overset mesh technology through STAR-CCM+. The motion of two heaving boxes with different incident wave frequencies and the characteristics of the hydrodynamic resonance in a narrow gap between the two boxes were investigated based on the established numerical wave tank. The results show that the numerical model and experimental model used in the present study can accurately predict the resonance of the double-box heave motion under different incident wave frequencies and reflect the motion response and hydrodynamic resonance characteristics of the two boxes. Compared with the fixed boxes, changes happen to the resonance region of two heaving boxes, with the resonance frequency increasing and resonance amplitude decreasing. Hence, by taking the heave freedom of the two boxes into account, the gap resonance becomes much closer to that in reality, which has a positive significance to the design of marine engineering structures with a similar type of motion response.

关 键 词：双箱 波浪 数值水池 实验 垂荡运动 狭缝 共振 水动力 

分 类 号：O353.2[理学—流体力学]