流量及管径计算公式

流量=管子直径*管子直径*3.14*流速(15m/s)*时间0.15m*0.15m*3.14*15m/s*60s=63.58Nm3/min

0.3m*0.3m*3.14*15m/s*60s=254.34 Nm3/min