Reynolds number for air

The Reynolds number is a dimensionless number.

Symbol
$\mathrm{Re}_{air}$
Formulae
 $\frac{D_{o} V_{air}}{\nu_{air}}$ for cable $\frac{Di_{t} V_{air}}{\nu_{air}}$ for tunnel $\frac{D_{o} V_{air}}{\nu_{air}}$ in free air
Related
$D_{o}$
$Di_{t}$
$\nu_{air}$
$V_{air}$
Used in
$T_{at}$
$T_{sa}$