随机波浪下波浪滑翔机的动态响应研究  

Study on Dynamic Response of Wave Glider Under Random Waves

作　　者：姜丽娜[1] 常宗瑜[1,2] 冯展霞 邓超 周志鹏 葛茂昆 郑中强[1] Jiang Lina;Chang Zongyu;Feng Zhanxia;Deng Chao;Zhou Zhipeng;Ge Maokun;Zheng Zhongqiang(College of Engineering,Ocean University of China,Qingdao 266100,China;The Key Laboratory of Ocean Engineering of Shandong Province,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]中国海洋大学山东省海洋工程重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2023年第4期88-97,共10页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(51875540,51809245);中央高校基本科研业务费专项(202061025)资助。

摘　　要：针对波浪滑翔机在实际波浪作用下会产生复杂运动,而目前研究多在规则波浪条件下开展的问题,本文对波浪滑翔机在随机波浪激励下的运动过程和推进性能进行了研究。通过JONSWAP波浪谱及浮体的幅值响应算子(Response Amplitude Operator,RAO),得到了浮体在随机波浪激励下垂荡响应;基于莫里森方程定义了波浪滑翔机运动过程中所受水动力,建立了多体动力学模型;利用数值方法计算了波浪滑翔机在随机波浪下的动态响应。结果表明,和规则波激励相比,随机波浪下波浪滑翔机的翼片转角、缆索摆角、前进速度、推进力等要素的动态响应不再具有周期性,缆索张力以及水上浮体与水下推进机构的运动轨迹也随着随机波浪波高的增、减产生显著变化。In view of the situation that wave glider may have complex movement under the effect of the actual waves,while most of the current research is based on the problem of regular waves.Therefore,the movement process and the propulsion performance of wave glider under random waves is studied in this paper.Firstly,the heave response of floating body under random waves is obtained by combining JONSWAP wave spectrum and the RAO(Response Amplitude Operator) of floating body.Then,the hydrodynamic force of wave glider is defined based on Morrison equation,and the multi-body dynamics model of the wave glider is obtained.Besides,the dynamic response of the wave glider under random waves is calculated by numerical method.The results illustrate that the periodic characteristics of the pitch angle of hydrofoil and cable,the forward speed and the propulsion force are disappeared.The tension of cable and the motion trajectory of the wave glider also fluctuate obviously with the fluctuation of random wave height.

关 键 词：波浪滑翔机 随机波浪 多体动力学模型 动态响应 推进性能 

分 类 号：U661.32[交通运输工程—船舶及航道工程]