Well, to be more specific, the interface over which convection is happening isn't an external surface.  Its an internal surface and I want to model the temperature of both the liquid and the solid parts.  I took a look at dw_surface_dot and BCNewtonTerm but I believe that they're intended only for external surfaces.  Is this correct?  How would you go about solving this?

Thanks,

Geoff




On Tuesday, August 19, 2014 10:10:15 AM UTC-4, Robert Cimrman wrote:
On 08/19/2014 03:47 PM, Geoff Wright wrote:
> 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?

The Robin BC should be applicable using dw_surface_dot term. What particular
form of the BC do you need?

r.