Fanning friction factor

Fanning friction factor is proportional to shear stress at pipe/conduit wall as number of velocity heads and is used in momentum transfer in general and turbulent flow calculations in particular. It is equivalent to (1/4) the Darcy friction factor. It is normally defined in one of the following forms :

Fanning Friction Factor Calculator

Formula 1

gc (Gravity constant):

d (Diameter):

ΔP (Pressure Drop):

ρ (Density):

v (Velocity):

L (Length):

Formula 2

gc (Gravity constant):

d (Diameter):

ρ (Density):

v (Velocity):

ΔP (Pressure Drop):

ΔL (Length):

Formula 3

gc (Gravity constant):

d (Diameter):

ρ (Density):

ΔP (Pressure Drop):

G (Mass Velocity):

L (Length):

Formula 4

gc (Gravity constant):

d (Diameter):

ρ (Density):

G (Mass Velocity):

ΔP (Pressure Drop):

ΔL (Length):

Where:
d	=	Diameter
delta-P	=	Pressure drop
dP/dL	=	Pressure drop per unit length
gc	=	Dimensional constant
G	=	Mass velocity
L	=	Length
rho	=	Density
V	=	Velocity