Simulation Study Of Wind Load On Dish Solar Condenser

Dish solar condenser is one of the most important equipment for theconcentrating solar thermal power system, the wind load is an important one duringall loads endured by the dish solar condenser. Because it not only influences thestructural strength of dish solar condenser, but also causes the distorts of emitting a reaand the back-frame, which influence the precision of dish solar condenser seriously.Thus, for concentrating solar power system, the research of work conditions under avariety of wind loads of the dish solar condenser and how to improve its windresistance have become one important links of dish solar condenser loads analysis.The objects such as dish solar condenser with special structure have thefollowing characteristics: the windward side of the dish-shaped can be rotated,non-fluidic structure and strong sensitivity to wind action. The wind loads researchmethods mainly include wind tunnel tests and computational wind engineering. Withthe development of the computer and computational fluid dynamics, thecomputational wind engineering has replaced wind tunnel tests gradually due to itseffective and more accurate method. This article utilizes the principle of thecomputational wind engineering and numerical simulation to analyze wind load ondish solar condenser.(1)Aiming at dish solar condenser, the aerodynamics characteristics andnumerical simulation elementary theory were elaborated in the article. The moredetails of researches were discussed such as grids, boundary condition, turbulencemodel and calculation parameters with regard to numerical simulation.(2)A single finite element analysis model of dish solar condenser was establishedbased on the CFD analysis software, computed the wind load coeffi cients and thewind torque coefficients of the dish solar condenser and the flow fields around thedish solar condenser. The variations of wind load coefficients and wind torquecoefficients with different azimuth angles and altitude angles were focus on. Inaddition, the wind load coefficients and wind torque coefficients of dish solarcondenser with different gaps and rotary axis positions were analyzed.(3)Taking the most typical group(two condensers radially arranged in series)forexample, calculated the minimum distance between the condensers, and simulated inthis condition to obtain the flow fields around the dish solar condenser and wind loadcoefficients. Obtained the variations of wind load interference factors between the radial arrayed condensers.