Pipe Pressure Drop
Calculate pressure drop
Input Parameters
Valid
Pressure Drop
0.00 kPa
Formula
ΔP (Pa) = f × (L/D) × (ρ × v²/2)
Fill in the values on the left and click Calculate to see your result.
Formula
ΔP (Pa) = f × (L/D) × (ρ × v²/2)
Pressure drop is caused by friction in the pipe.
Assumptions
- Water at 1000 kg/m³
- Darcy-Weisbach equation
Step 1: Calculate velocity
v = 3.395 m/s
Step 2: Apply Darcy-Weisbach
ΔP = 0.02 × (100/0.025) × (1000 × 3.395²/2) = 461,120 Pa
Step 3: Convert to kPa
461,120 / 1000 = 461.12 kPa
Frequently Asked Questions
How to reduce pressure drop?
Use larger pipes, reduce flow rate, or improve pipe smoothness.