张伟, 任增源, 许依凡, 等. 鳍形浮子多自由度水动力性能研究[J]. 中国舰船研究, 2024, 19(4): 1–11. doi: 10.19693/j.issn.1673-3185.03618
引用本文: 张伟, 任增源, 许依凡, 等. 鳍形浮子多自由度水动力性能研究[J]. 中国舰船研究, 2024, 19(4): 1–11. doi: 10.19693/j.issn.1673-3185.03618
shu
ZHANG W, REN Z Y, XU Y F, et al. Multi-degree-of-freedom hydrodynamic performance study of finned floats[J]. Chinese Journal of Ship Research, 2024, 19(4): 1–11 (in Chinese). doi: 10.19693/j.issn.1673-3185.03618
Citation: ZHANG W, REN Z Y, XU Y F, et al. Multi-degree-of-freedom hydrodynamic performance study of finned floats[J]. Chinese Journal of Ship Research, 2024, 19(4): 1–11 (in Chinese). doi: 10.19693/j.issn.1673-3185.03618
shu

鳍形浮子多自由度水动力性能研究

Multi-degree-of-freedom hydrodynamic performance study of finned floats

    摘要
  • 摘要:
    目的 为优化摇臂式波浪能装置的能量俘获（俘能）效果，针对平台支柱分流方案与浮子形状对装置俘能效果影响进行研究。
    方法 首先，建立浮子运动的水动力学模型；然后，利用AQWA仿真软件，对平台支柱不同分流方案的多种鳍形浮子的水动力特性进行计算分析，得到鳍形浮子的波浪合力、幅值响应算子、附加质量及辐射阻尼等频域参数，以及位移、速度、加速度及激振力等时域参数；最后，研究平台支柱不同分流方案的各鳍形浮子的俘能宽度比。
    结果 结果表明：不同平台支柱分流方案对鳍形浮子的频域参数影响较小，对时域参数的浮子运动位移影响较小，但对运动周期影响较大；双柱分流方案的100°时鳍形浮子的俘能效果最优。
    结论 基于所建立的仿真数值模型能够准确模拟多自由度鳍形浮子在波浪运动中的水动力学响应，可为振荡浮子式波浪能发电平台浮子形状的优化设计提供参考。

     

    Abstract:
    Objective To optimize the energy capture efficiency of a rocker-type wave energy converter, the effects of the platform pillar wave diversion scheme and shape of finned floats on energy capture are studied.
    Methods First, a hydrodynamic model of float motion is established. Next, the hydrodynamic characteristics of different finned floats are calculated using AQWA software and analyzed under different platform pillar wave diversion schemes, different frequency domain parameters such as added mass, radiation damping, wave excitation force and response amplitude operator (RAO), and different time domain parameters such as displacement, velocity, acceleration and excitation force. Finally, the energy-capture width ratios of different finned floats under different platform pillar wave diversion schemes are investigated.
    Results The results show that different platform pillar wave diversion schemes have little effect on the frequency domain parameters of the finned floats or the float motion displacement of time domain parameters, but a large effect on the motion period. Energy capture is optimal at a fin angle of 100° under the double-pillar wave diversion scheme.
    Conclusions Based on the proposed numerical simulation model, the hydrodynamic response of multi-degree-of-freedom finned floats in wave motion can be simulated accurately, providing useful references for the optimized design of the float shape for oscillating float-type wave energy generation platforms.

     

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