基于流固耦合的单轴跟踪式光伏结构风致扭转研究
STUDY ON WIND-INDUCED TORSION OF SINGLE-AXIS TRACKING PHOTOVOLTAIC PANEL STRUCTURE BASED ON FLUID-SOLID COUPLING
李正农 1伍世芳1
作者信息
- 1. 湖南大学建筑安全与节能教育部重点实验室,长沙 410082
- 折叠
摘要
以某跟踪式光伏发电系统为研究对象,通过编写自定义程序代码UDF对Fluent进行二次开发,建立单轴跟踪式光伏结构的二维模型,研究其在风荷载作用下的扭转振动问题.研究结果表明:风速达到某一特值后,结构出现等幅周期性振动,发生软颤振现象,而其阻尼比对抑制扭转振动有一定的作用,这同实际情况较吻合;光伏组件倾角在0°～20°范围内时,倾角越大,扭转振动的临界风速越低.
Abstract
Taking a tracking photovoltaic power generation system as the research object,Fluent software was developed twice by writing a custom program code UDF,and a two-dimensional model of single-axis tracking photovoltaic structure was established,and its torsional vibration under wind load was studied.The results show that when the wind speed reaches a certain special value,the photovoltaic panel has periodic vibration with equal amplitude and soft flutter phenomenon,and its damping ratio has a certain effect on suppressing torsional vibration,which is consistent with the actual situation.When the inclination angle of photovoltaic panel is in the range of 0°-20°,the larger the inclination angle,the lower the critical wind speed of torsional vibration.
关键词
太阳能/光伏组件/风效应/流固耦合/扭转振动/阻尼Key words
solar energy/PV modules/wind effects/fluid-solid coupling/torsional vibration/damping引用本文复制引用
出版年
2024
NETL
NSTL
万方数据