3.3.8 helical_srinivasan - Srinivasan friction factor

f = helical_srinivasan(re, de)

Computes the Srinivasan et al. friction factor for helical pipes with a given dean number valid for the entire laminar flow region.

Arguments

re

Reynolds number .

de

Dean number .

Returns Helical friction factor (Darcy definition) , dimensionless.