用数值模拟方法研究挡风抑尘网高度对抑尘效率影响

Relationship between height and efficiency of wind-proof and dust suppressing network by numerical simulation

采用数值模拟方法对某电厂露天煤场周围设置挡风抑尘网进行流场模拟,结合起尘量公式,计算了挡风抑尘网在不同高度下的抑尘效率。挡风墙高度分别12m、16m、20m、24m,当风速为4.3m/s时,挡风抑尘网效率分别为67.2%、81.4%、86.6%和88.3%;当风速为20 m/s时,抑尘网效率分别为55.1%、69.8%、74.6%和76.5%。

The dust suppressing efficiency of different heights is simulated by numerical simulating of the flow of the wind-proof and dust suppressing network around the open coal yards of a Power Plant.When the wind-proof wall is 12,16,20,24 meter height respectively,wind velocity is 4.3m/s,the dust suppressing efficiency is 67.2%,81.4%,86.6%and 88.3% respectively.When the wind velocity is 20m/s,the dust suppressing efficiency is55.1%,69.8%,74.6%and 76.5% respectively.