Pipe Friction Loss Calculator
Calculate the friction loss in a straight pipe using this calculator.
It uses the Darcy-Weisbach equation and solves the Colebrook equation
in case of turbulent flow. The procedure is described in greater details
on Pipe Friction Loss Calculation page.
Surface roughness can either be input by selecting the surface type using the selector
or by setting the Internal pipe surface to Custom user input be set a user defined value.
If using water or saline water (e.g. sea water) the kinematic viscosity and density
can be calculated using these calculators for
water
and
saline water
on this webpage.
The unit used for kinematic viscosity used in the calculator is mm2/s which is
equal to Centistokes i.e. mm2/s=cSt.
| Symbol | Property | Value | Unit |
|---|---|---|---|
| Hydraulic diameter | Dh | 5,000.0 | mm |
| Pipe length | L | 1,288,000.0 | m |
| Rougness | ks | 0.25 | mm |
| Volumetric flow rate | q | 420,000.0 | m3/h |
| Mean flow velocity | w | 5.94 | m/s |
| Kinematic viscosity | ν | 0.25 | mm2/s |
| Density | ρ | 1,025.0 | kg/m3 |
| Reynolds number | Re | 118,835,691 | |
| Friction Coefficient | fD | 0.01054 | |
| Friction loss in the straight pipe | pfp | 491.3339 | Bar |
