Network Parameters
Presets
Fluid temperature
20 °C
Inflow Q_in
0.050 m³/s
Pipe settings (7 pipes)
| Pipe | L [m] | D [mm] | ε [mm] |
|---|
—
Iterations to converge
—
Flow error ΔQ [m³/s]
—
Max head loss [m]
—
Max Re
| Pipe | Q [m³/s] | V [m/s] | Re | f | h_f [m] |
|---|
Theory
Hardy-Cross flow correction per loop:
$$\Delta Q = -\frac{\sum h_f}{\sum n \cdot h_f / Q}, \quad n=2$$Darcy-Weisbach head loss:
$$h_f = f\,\frac{L}{D}\,\frac{V^2}{2g}$$Colebrook-White friction factor:
$$\frac{1}{\sqrt{f}} = -2\log\!\left(\frac{\varepsilon}{3.7D} + \frac{2.51}{Re\sqrt{f}}\right)$$Laminar (Re < 2300): $f = 64/Re$
CAE applications: Preliminary flow balancing for water distribution mains and industrial piping · Sprinkler and cooling loop flow distribution estimates · Pre-CFD hand-calculation verification before EPANET or pipesim runs.