Graetz number
Input(s)
DH: Diameter in Round Tubes or Hydraulic Diameter in Arbitrary Cross-section Ducts (m)
L: Length (m)
Re: Reynold Number (dimensionless)
Pr: Prandtl Number (dimensionless)
Output(s)
Gz: Graetz Number (dimensionless)
Formula(s)
\[
\mathrm{Gz}=\mathrm{DH} * \operatorname{Re} * \frac{\mathrm{Pr}}{\mathrm{L}}
\]
Reference(s)
Wikipedia.org.