emmmm,管道糙率呢
好吧,我考虑的是管道糙率n=0.014,π=3.14,管道完全充满的情况下计算的。
已知管道D=0.2m,L=200m,h=2m,计算得到
管道截面积A=0.0314,湿周χ=1.256,水力半径R=A/χ=0.05,谢才系数C=1/n ×R^(1/6)=48.66,水力坡度J=h/L=0.01
有流速v=C×√(R×J)=48.66×√(0.05×0.01)=1.088m/s
流量Q=A×v=0.0314×1.088=0.0342m3/s=123.0m3/h
追问管道是HDPE双壁波纹管 粗糙系数是0.009
管道是HDPE双壁波纹管 粗糙系数是0.009
追答![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/7acb0a46f21fbe09c4627e2765600c338744adc1?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问还要麻烦您帮忙算一下如果把管道换成PVC160MM的粗糙系数是0.014能有多少流量呢
追答![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a5c27d1ed21b0ef40f591f66d3c451da81cb3e50?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)