Convective boundary condition

Hi,

I'm trying to use sfepy to model the temperature distribution at steady state, where theres a heat source, conduction through a solid, and convection across a solid/liquid interface. Struggling with the convection part... I've been doing some reading and I think I need to enforce a convective boundary condition, sometimes known as a robin boundary condition. This would add a term where you integrate the temperature of the liquid across the interface surface. Does this sound right? Are there any examples of doing something like this?

Thanks,

Geoff