摘要
该文采用时域势流模型研究了浮力摆式波浪能装置的水动力性能,通过与频域模型的比较,验证了时域模型,并对比分析了两种典型的PTO阻尼(Power Take-off,能量提取系统)下浮力摆运动和装置转换功率的时间过程、浮力摆摆幅、装置的转换效率等方面,其中恒定阻力矩的选取参照了激振力矩。研究表明:相比采用恒定阻力矩,采用线性阻尼时浮力摆的动力响应更加规则、平稳。两种PTO阻力矩条件下,波浪和摆板参数相同时,装置的最高转换效率基本相同,都能达到100%以上,但转换功率和转换效率的变化趋势有所不同;相应于最佳线性阻尼,采用恒定阻力矩时,装置也存在最佳阻力矩;对于5 s左右的波周期,采用不同类型的PTO阻尼,当装置的转换功率相同时,浮力摆的最大转速基本相同,但最大摆幅和最大阻力矩差别则较大。
The hydrodynamic performance of a bottom-hinged flap wave energy converter （WEC） was investigated using a time-domain numerical model. The model was verified through a frequency-domain model. Motions of flap, processions of power capture, pitch-amplitudes and capture factors were investigated under two typical power take-off （PTO） damping, andconstant PTO moments were selected according to the exciting moments. The result showed that dynamic responses of the flap with linear damping were more regular and steady than that with constant moment. With the two type PTO damping, the maximum capture factors were almost the same and can exceed 100% when the same wave and flap parameters were used, but the relation between capture factor and PTO moment was different. Corresponding to the optimum linear damping, there exists optimum moment when constant moments was used by the flap. As to the wave period about 5s, under different type PTO damping, the maximum angler velocities are almost the same, but the maximum pitch-amplitudes and maximum moment are different.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2013年第2期151-158,共8页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金项目(41206074
51205346)
海洋可再生能源专项资金项目(GHME2011CX01
GHME2011ZC05)~~
关键词
波浪能
浮力摆
水动力性能
时域模型
wave energy
bottom-hinged flap
hydrodynamic performance
time-domain model
