Wind Tunnel Simulation of Wind Protection Effects of Nylon Nets with Different Structures
In order to reveal the wind-protecting effect of nylon nets with different structures under different wind speeds,a wind tunnel simulation was conducted under the wind speed of 6 m · s-1,9 m · s-1 and 12 m · s-1 for three kinds of nylon nets including the uniform nylon net A,dense upper-porosity and sparse lower-porosity nylon net B,and sparse upper-porosity and dense lower-porosity nylon net C respectively.Through comparative analysis of acceleration rate contour lines and wind protection effects of nylon net fences with different structures under different wind speeds,the results are as follows:① There were the similarities among the wind fields of three kinds of nylon nets with different structures,but the differences were apparent.There were the wind-accelerated regions at the lower part of wind shadow area of nylon net B,but not at that of nylon net A and C;the central position of wind shadow area of nylon net C was low;② The wind-protecting effect of nylon net A and C was decreased with the increase of wind speed,but that of nylon net B was on the contrary;③ The wind-protecting effect of nylon net C was obviously better than that of nylon net A and B.Wind speed and nylon net structure should be considered in the layout of nylon net fence in practice,and the nylon net fence with sparse upper-porosity and dense lower-porosity was recommended.
国家科技期刊平台
NSTL
万方数据
维普
