Darcy Weisbach equation (head loss)
Description
In fluid dynamics, the Darcy–Weisbach equation is a phenomenological equation, which relates the head loss — or pressure loss — due to friction along a given length of pipe to the average velocity of the fluid flow.
Darcy friction factor can be found from a Moody diagram
Variables
hf | Head loss (m) |
fD | Darcy friction factor (see diagram) (dimensionless) |
L | Length of the pipe (m) |
D | Hydraulic diameter (m) |
V | Average velocity of the fluid flow (m/s) |
g | Standard gravity |
Categories
External links