Simulation Of Wind Load Around The Solar Tracking Device Based On CFX

Solar tracking device is one of the most important equipment for the concentrating solar power system, the wind load is an important one during all loads endured by the solar tracking device, thus, for concentrating solar power systems,the research of the work conditions under a variety of wind load of the solar tracking device and how to improve the work condition of the wind resistance has always been took attention by power plant design staffs.The objects such as solar tracking device with special structure have the following characteristics:the windward side of the plate can be rotated,non-fluidic structure, bad aerodynamic properties, and with blunt body shaped wind load. To determine the structure of the wind load, except commonly used wind tunnel experiments, structure of fluid dynamics simulation technology provides a new approach for the structure of the wind resistance study. The wind load factor of an object, also known as the shape factor, is related to the shape and the Reynolds number of the object. For the objects with non-streamline structure, the Reynolds number is a constant, so the wind load factor only depends on the shape. So the key of computing the wind load endured by solar tracing device is to know the wind load coefficient of the structure.In this paper, a finite element analysis model of was established based on the CFX fluid dynamics analysis software, computed the wind power coefficient and the wind torque coefficient of the solar tracking device and the velocity distribution and pressure distribution around the solar tracking device. Moreover, the wind power coefficient and the wind torque coefficient of the solar tracking device changes of different wind angles were focus on. Due to the particularity of the structure, the wind coefficients and wind torque coefficient of solar tracking devices with different structural design parameter of length-width ratio, height and components installation clearance, based on the same effective wind area, were respectively the analyzed and compared. Then, the wind load distributions of solar tracking devices with different installation center position were analyzed. The analysis results validated the accuracy of the computational formulas of the wind power coefficient and the wind torque coefficient from literatures. This article has a certain theoretical significance on solar tracking device design and improving its wind resistance.