摘要
以正三角形排列刚性耦合三圆柱柱群能量收集装置为研究对象,通过双向流固耦合数值方法研究不同水流入射角α=0°、45°、90°、135°、180°对柱群能量收集装置的水动力响应及低速水动能俘获的影响规律。结果表明,入射角会显著影响柱群的动态响应和锁定宽度。α=0°、135°两种入射角下不会出现下分支;α=0°时规定范围最宽,α=45°、180°时最窄。初始分支中每组柱群的尾涡都呈“2S”模式,而上分支和下分支中尾涡模式随α的变化呈现出“P+S”、“T”、“2P”等不同模式。当入射角平行或垂直于水平方向时,柱群俘能装置成为高俘能型。α=0°是该研究中最适合能量收集的角度,其次是α=180°和α=90°。结合能量转换效率,α=0°、Ur=9是能量收集的最佳选择。
This study takes the three-cylinder oscillator with rigid connection as an energy harvester,which is arranged in an equilateral triangle.The influence of different water flow incident anglesα=0°,45°,90°,135°and 180°on the hydrodynamic response and low-velocity hydrokinetic energy capture of the energy harvester is studied by two-way fluid-structure interaction(FSI)numerical method.The results show that the incidence angle significantly affects the dynamic response and lock-in range of the three-cylinder oscillators.There is no lower branch in amplitude response atα=0°andα=135°,while the lock-in range is widest atα=0°and narrowest atα=45°andα=180°.The vortex of the three-cylinder oscillator at each incidence angle in the initial branch shows“2S”patterns,and show different vortex-shedding patterns such as“P+S”,“T”,“2P”and others in the upper and lower branches.When the incident angles are parallel(i.e.,α=0°andα=180°)or perpendicular to the incoming flow direction(α=90°),the three-cylinder oscillators have higher energy capture performance.The incidence angleα=0°is the most suitable angle for energy harvesting.It is followed byα=180°andα=90°.Considering the energy conversion efficiency,α=0°at Ur=9 is the best chice.
作者
任霞
罗竹梅
于凤荣
梁韩
李野
Ren Xia;Luo Zhumei;Yu Fengrong;Liang Han;Li Ye(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)
出处
《太阳能学报》
北大核心
2026年第1期738-746,共9页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(52469017)
云南省基础研究专项-重点项目(202401AS070058)。
关键词
海洋能
俘能结构
涡激振动
流固耦合
俘能特性
三圆柱
ocean energy
energy capture structure
vortex-induced vibration
fluid-structure interaction
energy capture characteristics
three-cylinder
