太阳能跟踪装置风载荷的计算方法

摘要

风载荷是跟踪装置所承受的主要载荷,其大小直接影响整个系统的结构强度以及装置传动部件的选择.太阳能跟踪装置的常规形式属于非流线的可旋转平板结构,其风载荷主要与风力系数相关.文章详细分析了跟踪装置的风载荷,比较了3种不同风力系数的计算方法,结果表明:三维CFD数值计算方法与系统的实际试验结果更加吻合.%Wind load is the main load endured by the tracking device, it affects the tracking device structure strength design and the design of driving parts. A solar tracking device generally has a structure of rotatable plate, which is the characteristic of non-streamline, its wind load is determined by the wind load coefficient. With the analysis of wind load of tracking device, three wind coefficient calculation methods were compared. The results show that: the wind load coefficient calculated by computational fluid dynamics method is more consistent with the actual situation.