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

3.9.2 reynolds_number - Reynolds Number Re
re = reynolds_number(v,d,nu)
re = reynolds_number(v,d,mu,rho)

Calculate the dimensionless Reynolds number given the velocity and diameter of a pipe as well as either the kinematic viscosity or the density as well as dynamic viscocity.

Re=DV ν =VDρ µ

Arguments

v

Velocity (m/s).

d

Diameter (m).

nu

Kinematic viscocity (m2/s).

mu

Dyanamic viscocity (Pa·s).

rho

Density (kg /m3).

Returns Reynolds number, Re .

Possible Errors

Reynolds number unknown amount of arguments

The function must either be supplied with 3 arguments, V, D and ν or with 4 arguments, V, D, µ and ρ.