Graetz number

Written by Jerry Ratzlaff. Posted in Dimensionless Numbers

Graetz number characterizes laminar flow with heat transfer in a conduit.    

formula

\(Gz = \frac {d}{l} Re Pr \)

Where:

\(Gz \) = Graetz number

\(d\) = diameter

\(l\) = length

\(Re\) = Reynolds number

\(Pr\) = Prandtl number