Simulation Analysis of Air Baffling Flow of Greenhouse

Around the greenhouse exists the complex wind field of circumferential flow,the distribution of its superficial wind pressure is the basis of greenhouse design and optimization.In order to understand the distributing rule of the wind pressure of the greenhouse outside surface,the two-dimensional greenhouse physical models under two operating modes(with or without visor curtain)are established and the computation of numerical simulation is carried out by using the hydrodynamics software-Fluent.The result showes when outside the greenhouse there is visor curtain,the wind fields around become more complicated.In the same location of greenhouse surface-under two kinds of operating modes,between the wind pressure and wind inhale value there is a considerable difference.When the greenhouse has visor curtain,the wind force acting on it will be bigger.Thus,for designing a greenhouse which has visor curtain,the traditional wind pressure coefficient does not necessarily guarantee the reliability and stability of the greenhouse.