🔗 ✉ ☰  Türkçe  Agenda | General | Engineering | Hydraulic | Free flow Flow conditions: Fr < 1     Sub critical flow Fr = 1     Critical flow Fr > 1     Super critical flow Q     Flow discharge [m³/s] A     Wet area [m²] P     Wet perimeter [m] T     Surface width [m] V     Flow velocity [m/s] R     Hydraulic radius [m] D     Hydraulic depth [m] Fr     Froude number [-] g     Gravitational acceleration [9.81 m²/s] Energy equation (Bernoulli) E     Total energy [m] ΔH     Energy loss [m] H     Water level [m] h     Water height [m] Z     Bottom level [m] L     Flow line length [m] V     Flow velocity [m/s] g     Gravitational acceleration [9.81 m²/s] S     Slope [-] Energy loss ΔH     Total loss [m] ΔHF     Friction loss [m] ΔHM     Minor losses [m] L     Flow line length [m] J     Unit friction loss [m/m] K     Local loss coefficient [-] V     Flow velocity [m/s] g     Gravitational acceleration [9.81 m²/s] Friction loss / Kutter formula J     Unit friction loss [m/m] A     Wet area [m²] R     Hydraulic radius [m] S     Slope [-] b     Friction coefficient [-] ------------------------------ Concrete pipe     b=0.35 Plastic pipe     b=0.10 Friction loss / Manning formula J     Unit friction loss [m/m] A     Wet area [m2] R     Hydraulic radius [m] S     Slope [-] n     Friction coefficient [-] ------------------------------ Concrete pipe     n=0.013 Plastic pipe     n=0.008