which turbulence model to use for buoyancy ?
 

Hello,

Im dealing with a simulation including a narrow duct. walls have a temperature. air is blown by a fan at upper left side and also entering duct freely at the bottom and rises as it gets heat. So my model has both turbulence(the region that is affected by fan) and natural convection(where there is no fan effect).

I need to get heat transfer rate from walls.

Should I use sst model or k-e enhanced model with full buoyancy effects option?

or other way to ask > Is sst model sensitive to buoyancy ?