规则波作用下旋转浮子式波浪能捕获装置水动力试验研究

EXPERIMENTAL RESEARCH ON HYDRODYNAMIC BEHAVIOR OF ROTATING BUOY WAVE ENERGY CONVERSION DEVICE UNDER REGULAR WAVES

提出一种旋转浮子式波浪能捕获装置,并进行一系列物理模型试验来研究其在规则波作用下的水动力行为特性。试验研究发现:1)浮子旋转角速度随螺距的增大而减小。2)入射波周期小于2.4 s时,平均角速度随入射波周期的增加呈增大趋势;入射波周期大于2.4 s时,随着入射波周期的增加,平均角速度增幅趋缓,个别工况呈轻微减小的趋势。3)波能捕获宽度比与入射波周期基本呈正相关关系。波能捕获宽度比随螺距的减小而增大;在螺距δ=0.02、入射波周期T=2.4 s时,波能捕获宽度比达到最大。最后,利用量纲分析方法,推导旋转浮子的平均角速度方程,并利用试验数据对其进行验证。

A rotating buoy wave energy capture device was proposed,and a series of physical model tests were carried out to study its hydrodynamic behavior under regular waves.The experimental results show that:(1)The angular velocity of rotational buoy decreases with the increase of the pitch of screw.(2)When the period of the incident wave is smaller than 2.4 s,the average angular velocity increases with the increase of wave period;When the period of the incident wave is higher than 2.4 s,the increasing amplitude of average angular velocity decreases with the increase of wave period,and even the average angular velocity decreases for a small proportion of scenarios.(3)The capture width ratio is basically positively correlated with the wave period.The capture width ratio increases with the decrease of the pitch of screw.Whenδ=0.02 and T=2.4 s,the capture width ratio reaches the maximum value of 22.65%.Finally,the dimensional analysis method was used to derive the average angular velocity equation,which is verified well by the experimental data.