Grashof number conductor-gas

Symbol
$\mathrm{Gr}_{c}$
Formulae
$\frac{D_{c}^{3} \beta_{gas} g \left(\theta_{c} - \theta_{gas}\right)}{\nu_{gas}^{2}}$
$\nu_{gas}$
$\theta_{c}$
$\theta_{gas}$
Gas temperature [$^{\circ}$C]
Used in
$\mathrm{Nu}_{c}$