Reply To: Forced convection

[Amine Ben Hadj Ali]

Transient Solver
Rod modelled as resolved solid zone
Fluid Zone with boussinesq approximation for density or temperature density. Account for gravity effects.
Opening or sides as pressure boundaries. If forced convection you probably have a forced inflow. Incorporate it as velocity inlet or mass flow inlet or pressure inlet.

Start looking in to the standard Fluent tutorials.