基于计算流体力学的双轴太阳能跟踪系统气动评估  

Aerodynamic Evaluation of the Bi-axial Solar Tracking System based on Computational Fluid Dynamics

作　　者：陈昌宏[1] 张小霞 肖斌[2] 柏松林 黄莺[4,5] 朱彦飞 CHEN Changhong;ZHANG Xiaoxia;XIAO Bin;BAI Songlin;HUANG Ying;ZHU Yanfei(School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi'an 710012,China;PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China;CCCC NO.1 Highway Survey Design&Research Institute Co.,Ltd,Xi'an 710055,China;School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education(XAUAT),Xi'an 710055,China)

机构地区：[1]西北工业大学力学与土木建筑学院,西安710012 [2]中国电建集团西北勘测设计研究院有限公司,西安710065 [3]中交第一公路勘察设计研究院有限公司,西安710068 [4]西安建筑科技大学土木工程学院,西安710055 [5]教育部结构工程与抗震重点实验室,西安710055

出　　处：《西北水电》2022年第6期25-31,共7页Northwest Hydropower

基　　金：国家自然科学基金(51408489、51248007、51308448、51301136和51508464);陕西省国家科学基金(2020JM-1522017JM5007);西北工业大学研究生创新种子基金(CX2020122)。

摘　　要：随着光伏产业的发展,太阳能光伏板的空气动力学特性对其结构稳定性起着至关重要的作用。基于计算流体动力学(CFD)数值模拟方法,采用剪切应力传输(SST)k-ω数值模型,分析了双轴太阳能跟踪光伏板阵列浸没在大气边界层流中的气动特性。通过对光伏板阵列结构下的风场模拟,研究了不同光伏板倾角(θ=0°、30°、45°、70°)对风场的影响。考虑到风的流动不限于一个方向,通过分析不同风向角(α=0°、45°、135°、180°)来确定特定光伏板倾角下的临界风向。此外,还研究了面板之间的纵向间距(L=10、15、20 m)和水平间距(H=1、2、3 m)的影响。结果表明光伏板的风压随光伏板倾角增大呈现逐渐上升的趋势;最大C_(L)的临界风向为180°,最大C_(D)的临界风向为0°;纵向间距增大会使第一排光伏板压力系数降低,水平间距增大对第一排光伏板压力系数几乎没有影响,而其他排光伏板压力系数均随着纵向间距和横向间距的增大而上升。计算结果可用于风荷载设计标准的改进。With the development of photovoltaic industry,the aerodynamic features of solar panel play a crucial role in its structural stability.Based on computational fluid dynamics(CFD)numerical simulation method and shear stress transfer(SST)k-ωnumerical model,the aerodynamic characteristics of a biaxial solar tracking photovoltaic panel array immersed in atmospheric boundary laminar flow are analyzed.By simulating the wind field under the photovoltaic panel array structure,the influence of different solar photovoltaic panel angles on the wind field is studied.Considering that the wind flow is not limited to one direction,the critical wind direction under a specific photovoltaic panel angle is determined by analyzing different wind angles.In addition,the influence of longitudinal spacing and horizontal spacing between panels is also studied.The results show that the wind pressure of PV panel increases gradually with the increase of PV panel angle.The critical wind direction of maximum C_(L)is determined to be 180°,and that of maximum C_(D)is 0°.The increase of longitudinal spacing will reduce the pressure coefficient of the first row of PV panels.The increase of horizontal spacing has little effect on the pressure coefficient of the first row of PV panels,while the pressure coefficient of other rows of PV panels increases with the increase of longitudinal spacing and transverse spacing.The calculation results can be applied to the improvement of the design standards of wind loads.

关 键 词：CFD 双轴跟踪系统 倾角 风向 间距 

分 类 号：TK519[动力工程及工程热物理—热能工程] TP273[自动化与计算机技术—检测技术与自动化装置]