- #1

- 599

- 1

## Main Question or Discussion Point

I am trying to find out how fast a vertical cylindrical water column heats due to the ambient temperature. I already calculated the heat transfer due to conduction but I am now interested in the role of natural convection. So to be clear there is a temperature difference between the walls and the fluid inside the cilindrical column (the top and bottom are preferably insulated) which might create due to instabilities convective flows.

Does anybody know (a reference to) a relation between Nusselt and probably the Rayleigh number for this situation?

Does anybody know (a reference to) a relation between Nusselt and probably the Rayleigh number for this situation?