Convection heat transfer coefficient, gas to duct

Symbol
$h_{conv_{gd}}$
Unit
W/(K.m$^2$)
Formulae
$\frac{D_{o} h_{conv_{og}}}{D_{di}}$Riser closed at both ends (Anders)
$\frac{\mathrm{Nu}_{gd} k_{gas} \left(0.4 + \frac{0.6 D_{o}}{D_{di}}\right)}{\delta _{d}}$Riser open at both ends (Anders)
$\frac{\mathrm{Nu}_{gd} k_{gas}}{D_{di}}$Riser open at top and closed at bottom (Anders/Hartlein & Black)
$h_{conv_{og}}$Riser closed at both ends (Hartlein & Black)
$h_{conv_{og}}$Riser open at both ends (Hartlein & Black IIa)
$\frac{\mathrm{Nu}_{gd} k_{gas}}{\delta _{d}}$Riser open at both ends, 0.1 ≤ $Ra$ < 10^5 (Hartlein & Black IIb)
Related
$D_{di}$
$D_{o}$
$k_{gas}$
$\mathrm{Nu}_{gd}$
Used in
$W_{conv_{gd}}$