Analysis of Wind Pressure Coefficients for Single-Span Arched Plastic Greenhouses Located in a Valley Region Using CFD

The wind pressure coefficient is essential for calculating the loads on greenhouses. single-span arched greenhouses built in valleys differs from those plain regions. To promote our understanding of characteristics and ensure structural safety valley areas, an analysis distribution law required. Firstly, we carried out a survey greenhouse undulate terrain near Tibet measured air density Lhasa, Tibet. Then, employing validated realizable k-ε turbulence model verification grid independence, with different azimuths was investigated. According to results, values, such as distance between mountain addition azimuth, were also obtained placed valleys. A calculation considering relationship proposed, whose results fit well computational fluid dynamics. relative errors two are within 15%. Research shows that there canyon effect area, its should be considered design. This research valuable design plastic or other