[Forrest_Lei]

Hi all,

Recently I am revisiting some of the cavity natural convection cases I did before using CFX version 12 (previously the work was done by version 5.7 if i remember correctly). If I turn on the buoyancy 'production and dissipation', the turbulent schmidt number is now 2.0 by default, and I know it was 0.9 before. Does anyone know what are the underlying reasons to change this default value? What kind of difference we would expect with these two values for a closed cavity natural convection case? The case I am looking at right now is a well defined case, 2D, vertical walls have a temperature difference, the horizontal walls are adiabatic.

thank you for your comments

Regards,
Forrest