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Fanning friction factor
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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

or

Fanning friction factor

or

Fanning friction factor

or

Fanning friction factor

 

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

 

unit conversion
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