基于空间共享与成本分摊理念,提出一种兼顾波浪能发电的新型三箱浮式防波堤。运用计算流体力学方法研究多体浮式防波堤的水动力特性,并与单体防波堤进行对比,分析动力输出系统（PTO）阻尼、浮体吃水对装置获能消波性能的影响。结果表明,总体积一定时,防波堤分体设计对提升装置获能有明显效果,前、中浮体共振频率错峰配置能显著拓宽装置获能有效频带;浮体的底部形状不对称设计能大幅提高装置获能峰值;合理选取PTO阻尼系数和增大后浮体吃水能提升装置消波性能。
Abstract
Based on the concept of space sharing and cost allocation for the integration of wave energy converter and floating breakwaters, a three-pontoon floating breakwater-WEC integrated system is proposed. A numerical model is established using computational fluid dynamics methods to study the performance of the multi-pontoon floating breakwater, and the effects of PTO damping and draft on the energy capture and wave attenuation performance are investigated. The results show that the split-module design of the breakwater has an obvious effect on improving the energy acquisition of the integrated system with the same total volume, and the staggered configuration of the resonance frequency of the front and middle pontoons significantly broaden the effective frequency band. The design of the front pontoon with a triangular shape at the bottom can further improve the energy capture level. The reasonable selection of the PTO damping coefficient and the increase of the draft of the rear pontoon can improve the performance of the integrated system in terms of wave dissipation.
关键词
波浪能转换 /
浮式防波堤 /
转换效率 /
波浪透射 /
消波性能 /
浮子
Key words
wave energy conversion /
floating breakwaters /
conversion efficiency /
wave transmission /
wave attenuation /
buoys
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基金
国家自然科学基金（52271297）; 国家自然科学基金联合基金重点项目（U22A20216）; 山东省自然科学基金（ZR2021ZD23）; 泰山学者工程专项经费资助（ts20190914）
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