Darcy-Weisbach Pressure Drop
Pipe-run pressure drop from friction factor, length, diameter and velocity. h_f = f·(L/D)·V²/2g.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Darcy friction factor | ||
| Pipe length | m | |
| Internal diameter | m | |
| Mean velocity | m/s | |
| Gravity | m/s² |
Source: White - Fluid Mechanics
In short
Pipe-run pressure drop from friction factor, length, diameter and velocity.