Frictional Pressure Drop Calculator

 Assumed: Single phase, incompressible, newtonian.

Input Parameters

Pipe geometry
Length (m)
Inner diameter (m)
Equivalent pipe roughness (m)
Pipe change in elevation (m)
Fluid Properties
Fluid velocity (m/s)
Fluid density (kg/m3)
Fluid viscosity (Pa*s)
Pressure Specifications
Inlet pressure (bar)
Minimum required pressure at outlet (bar)

Calculate Reset

Results

Reynold’s Number:
Flow Regime:
Fanning Friction Factor:
Transmission Factor:
Darcy/Moody Friction Factor:
Pressure drop per m:
Total Pressure Drop:
Pressure at outlet:

Print Results

References

1. Reynolds, O. (1883). "An experimental investigation of the circumstances which determine whether the motion of water shall be direct or sinuous, and of the law of resistance in parallel channels." Philosophical Transactions of the Royal Society 174: 935-982
2. Haaland, SE (1983). "Simple and Explicit Formulas for the Friction Factor in Turbulent Flow". Trans. ASIVIE, J. of Fluids Engineering 103: 89-90.