Wind tunnel testing was carried out to investigate the effect of a tall country elevator on the wind environment of neighboring greenhouses. The results showed that greater negative pressure was found on the surfaces of the closer greenhouses to the country elevator when the greenhouses were lotated to the leeward of the country elevator. The distribution of wind velocity at a height of 4m showed that the velocity was increased in the area up to the closer three greenhouses to the country elevator at a wind direction of WSW. The installation of wind breaks, with a height of 2m to 3m located between the country elevator and the greenhouses, was investigated. It was found that such low wind breaks showed no significant improvement of wind environment. On the other hand, the distance between the country elevator and the greenhouses was more effective. The results suggest that a distance greater than three times the height of a country elevator is necessary in order to neglect the effect of the county elevator.

Keywords: wind tunnel testing, pressure coefficient distribution, wind damage, location and layout