Biot number of the pipe

Symbol
$\mathrm{Bi}_{p}$
Formulae
$\frac{D_{ref} U_{inwall}}{2 k_{4}}$Morud & Simonsen / OTC 23033
$\frac{D_{ext} U_{inwall}}{2 k_{4}}$Ovuworie
Related
$D_{ext}$
$U_{inwall}$
Used in
$h_{buried}$