一种多参数表层漂流浮标的结构优化与性能分析

Structural Optimization and Performance Analysis of a Multi-Parameter Surface Drifting Buoy

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.