Pipeline Toolbox
Function Reference Manual
Early Public Release DD-00011-000

3.3.5 helical_gnielinski - Gnielinski helical friction factor
f = helical_gnielinski(re,de,d,r)

Computes the Gnielinski friction factor for helical pipes for turbulent flow.

Arguments

re

Reynolds number Re .

de

Dean number De .

d

Pipe inner diameter (m).

r

Helix radius R.

Returns Helical friction factor (Darcy definition) fH, dimensionless.