@wikipedia
Dimensionless quantity characterising the development of Natural Thermal Convection:
\mbox{Gr} = \frac{g \, \beta \, \Delta T \, L^3}{\nu^2} |
where
| temperature gradient | |
| Thermal expansion coefficient | |
| characteristic length | |
| Kinematic viscosity | |
| Standard gravity constant |
See also
Physics / Thermodynamics / Heat Transfer
[ Dimensionless Heat Transfer Numbers ]