摘要
多参数表层漂流浮标可用于海洋水文要素和海面气象要素的实时观测,但存在体积和重量过大、在海浪中摇摆剧烈的问题。针对以上问题,提出了一种结构优化方案,并从稳性和耐波性两个方面进行性能分析,分别用回复力臂和摇摆固有周期两个关键参数衡量优化方案的优劣。结果显示:倾角在0°~85°范围内,优化方案的回复力臂曲线在零点处的斜率比原漂流浮标增加96%,优化方案的回复力臂最大值比原漂流浮标增加41%;优化方案的摇摆固有周期减小到3.21 s,远小于原漂流浮标7.30 s的摇摆固有周期,且避开了波浪主能量周期范围。优化方案的稳性和耐波性比原漂流浮标明显改善,为多参数表层漂流浮标的结构设计提供参考。
The muhi-parameter surface drifting buoy can be used for real-time observation of marine hydrological elements and sea surface meteorological elements, but there are problems of large volume and weight, and heavy swinging in waves. Aiming at solving the above problems, a structural optimization scheme is proposed, and the performance analysis is carried out from two aspects of stability and seakeeping performance. The advantages and disadvantages of the optimization scheme are respectively measured by two key parameters: the righting arm and the natural rolling period. The results show that the slope of the righting arm curve of the optimized scheme at the zero point is 96% more than that of the original drifting buoy, and the maximum value of the righting arm of the optimized scheme is 41% higher than that of the original drifting buoy, when the inclination angle is in the range of 0~ to 85~, with the natural rolling period of the optimization scheme reduced to 3.21 s, which is much smaller than the natural rolling period of 7.30 s of the original drifting buoy and far away from the main energy period of the wave. The stability and seakeeping performance of the optimized scheme are obviously improved compared with the original drifting buoy, providing a reference for the structural design of a muhi-parameter surface drifting buoy.
作者
张继明
赵强
刘世萱
万晓正
王楷
ZHANG Ji-ming;ZHAO Qiang;LIU Shi-xuan;WAN Xiao-zheng;WANG Kai(Qilu University of Technology(Shandong Academy of Sciences;Institute of Oceanographic Instrumentation,Shandong Academy of Science;Shandong Provincial Key Laboratory of Ocean Environmental Monitoring Technolog;National Engineering and Technological Researeh Center of Marine Monitoring Equipment,Qingdao 266001,Shandong Province,China)
出处
《海洋技术学报》
2018年第3期13-18,共6页
Journal of Ocean Technology
基金
国家重点研发计划资助项目(2017YFC1403302)
国家自然科学基金资助项目(61405106)
山东省重点研发计划资助项目(2017GHY215010,2016GGH4501)
青岛市应用基础研究计划资助项目(17-1-1-99-jch)
关键词
漂流浮标
结构优化
稳性
耐波性
回复力臂
固有周期
drifting buoys
structural optimization
stability
seakeeping performance
righting arm
natural period