Darcy-Weisbach Equation (Hydraulics) Formula
Calculates head loss due to friction in pipe flow.
Formula
hf = f × (L/D) × (V²/2g)
Discipline: Hydraulics. Result unit: m.
Variables and units
- hf — Head Loss (m): Friction head loss
- f — Friction Factor: Darcy friction factor
- L — Length (m): Pipe length
- D — Diameter (m): Pipe diameter
- V — Velocity (m/s): Flow velocity
- g — Gravity (m/s²): Gravitational acceleration