倒虹管水力计算

备注管材（输入=引用）管径（m）水力坡降i充满度粗糙系数n充满角（以弧度计）水力半径湿周（m）流速（m/s）流量(m3/s)上游管段0.50.001510.00956.2830.1251.5711.0190.2001下游管段0.40.001510.00956.2830.1001.2570.8780.11040000.00950.000#DIV/0!0.000#DIV/0!#DIV/0!0000.00950.000#DIV/0!0.000#DIV/0!#DIV/0!管径（m）计算内径（m）流量(m3/s)水力坡降i流速(m/s）总水头损失H（m）倒虹管段0.40.20010.003941.591000i=3.94通过管段长度（m）重力加速度g水温（输入=引用）水的运动粘滞系数v（m2/s）199.81201.004E-06h0管段0.0749弯头个数管段个数h1进口0.064641h2出口0.1293h3弯头0.15510.430.424a0.000862469说明：本倒虹管计算的管径均按管道内径计算。倒虹管水力计算PVC-U管、PE管根据公式i=a*Q^1.774/D^4.774;倒虹管内的流速应大于0.9m/s。0.436080200300400流量（L/s）200.121110.374#DIV/0!#DIV/0!大小平均PVC-U管、PE管0.0090.010.0095玻璃钢管0.0090.010.0095石棉水泥管、钢管0.0120.0120.012陶土管、铸铁管0.0130.0130.013混凝土管、钢筋混凝土管、水泥砂浆抹面渠道0.0130.0140.0135土明渠（包括带草皮）0.0250.030.0275浆砌砖渠道0.0150.0150.015浆砌块石渠道0.0170.0170.017表4.2.3排水管渠粗糙系数倒虹管水力计算粗糙系数管渠类别干砌块石渠道0.020.0250.022505101520304060802001883002964003760.0000011390.0000010040.0000006580.000000801粘滞系数v（m2/s）0.0000017920.00000152外径Φ*壁厚（mm）计算内径（mm）0.0000003650.000000475水的运动粘滞系数温度（℃）0.000001307400*12200*6315*9.5轻工业部部标准SG78-80-75硬聚氯乙烯管的公称直径与计算内径关系公称直径（mm）