[Arvin]

Hi everbody,
I am simulating natural convection over a horizontal heated plate. The geometry is basically a tank.I have used boundary layer mesh near the heated plate, but I dont know if it is fine enough. How do i check that?

I have used temperature dependent function of density instead of Boussinesq approximation ( working fluid is water). I have not changed under relaxation factors. There is no change in velocity and temperature of water (0.0017 m/s and 306K) even after 20,000 iterations. Solution doesn't converge. Please help me with your suggestions.Thanks!!