浮子获能评价指标研究与参数优化

Evaluation Indicator Study of Float and Optimization of Float Parameters

结合有义速度的定义及最优阻尼理论,推导出一种新的浮子获能能力评价指标,该指标包含浮子的水动力学响应和海浪的波谱信息,可同时表征浮子的能量俘获性能及海况的能量分布特性,更全面地反映特定海域浮子的获能性能。为验证该评价指标的实用性,以其为目标函数,开展浮子结构优化设计。结果表明,以新指标为目标函数进行浮子结构优化设计可提高特定海域浮子的获能能力,并可简化浮子参数优化的过程。

Combined with the definition of meaningful velocity and optimal damping theory, a new evaluation indicator of float energy capture performance is derived, which contains the water dynamic response of float and the spectral information of ocean waves, can simultaneously characterize the float energy capture performance and the energy distribution of sea condition, and can more comprehensively reflect the energy capture performance of the float in specific sea area. In order to verify the practicability of the evaluation indicator, the new evaluation indicator is taken as the objective function to carry out the optimization design of float structure. The results show that the optimal design of the float structure with the new indicator as the objective function can improve the buoyancy capability of the float in the specific sea area and simplify the optimization process of the float parameters.