Research on Different Forms of Porous Windbreak under Cross Wind

Abstract

The single and double layers porous windbreaks were taken as research subjects for their effects of wind resistance, stability and structural optimization designing. The distribution of static pressure and velocity were researched in both sides of the windbreak. The force and overturning moment were calculated. The characteristics of energy dissipation was compared between the two windbreaks. The aperture ratio, port closing and panel spacing of the double windbreaks were researched. The results show that the kinetic energy was converted to pressure energy and the direction was changed by single windbreak. The votexs were formed near the double windbreak at the same time. The aerodynamic loads of single panel were greatly reduced by double windbreak. The force was more evenly through changing the aperture ratio. Closing the ports and reducing the spacing of the panel both can improve the loads of the double windbreak.