穿孔式双浮体装置水动力及波能转换特性研究

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (5) : 211-217.

论文

周亚辉1，杨兴林1，周效国2，张万超2

作者信息 +

Hydrodynamic and wave energy conversion characteristics of perforated double-floating body device

ZHOU Yahui1, YANG Xinglin1, ZHOU Xiaoguo2, ZHANG Wanchao2

Author information +

文章历史 +

摘要

为进一步解决波能转换装置向深水环境推进过程中存在能量转换效率问题，在现有双浮体点吸式波能装置基础上考虑穿孔阻尼板，提出新的穿孔双浮体带支撑立柱的结构形式。基于线性微幅波假设，通过特征函数展开和边界匹配的势流半解析方法，并结合多自由度振动理论，探索穿孔阻尼板对获能系统水动力、运动响应及俘获宽度比的影响。计算结果表明，阻尼板开孔会降低浮子及阻尼板自身受到的波浪激励力，浮子、阻尼板以及它们之间的耦合辐射作用力会随着阻尼板开孔半径增大而减小；阻尼板的开孔半径增大能有助于浮子与阻尼板的相对响应振幅；阻尼板会使系统出现两个耦合共振频率，在较小共振频率处的最优俘获宽度比均随着阻尼板开孔半径的增加先增大后减小。研究结果可为深水波浪能利用的工程应用提供理论基础，为后续振荡浮子波浪能发电装置优化提供依据。

Abstract

To further solve the problems of system stability and energy conversion efficiency in the development of wave energy utilization to deep water, the perforated damping plate is considered based on the existed point-absorber wave energy converter in this paper. A new structural form of dual-buoy with supported column and perforated plate is proposed. Based upon the hypothesis of linear micro-amplitude wave theory, the influence of the perforated damping plates and the variation of configuration parameters on the hydrodynamic, motion and power conversion efficiency of the system are explored by means of the semi-analytical method of eigenfunction expansion and boundary matching and the multi-degree-of-freedom vibration theory. The results show that the opening of the damping plate will reduce the wave excitation force on the float. The float, the damping plate and the coupling radiation force will decrease with the increase of the opening radius of the damping plate. Its increase can also promote the relative motion of float and damping plate. The damping plate will make the system appear two coupling resonance frequencies. The optimal wave energy conversion efficiency at the smaller resonance frequency increases first and then decreases with the increase of the opening radius of the damping plate. The research results can provide a theoretical foundation for the engineering application of wave energy utilization in deep water, and provide a basis for the optimization of oscillating-buoy wave energy converters.

导出引用

周亚辉1，杨兴林1，周效国2，张万超2. 穿孔式双浮体装置水动力及波能转换特性研究[J]. 振动与冲击, 2021, 40(5): 211-217

ZHOU Yahui1, YANG Xinglin1, ZHOU Xiaoguo2, ZHANG Wanchao2. Hydrodynamic and wave energy conversion characteristics of perforated double-floating body device[J]. Journal of Vibration and Shock, 2021, 40(5): 211-217

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