Dear All.
I would like to reproduce a natural convection problem like the one in this paper (https://download.yousendit.com/bFFQTmZURndnYU0wTVE9PQ) but i have some problem in implementing the boundary conditions (by the boussinesqThermal2d): an hot ellipse (or circle) in the center. Can someone give me a hint about?
Thank you in advance.
Stefano