If you specify a non-zero gravity force (in the
Conditions panel), and you are modeling a non-isothermal flow,
the generation of turbulent kinetic energy due to buoyancy (
12.4-1) is, by default, always included in the
FLUENT does not, by default, include the buoyancy effects on
To include the buoyancy effects on , you must turn on the Full Buoyancy Effects option under Options in the Viscous Model panel.
This option is available for the three - models and for the RSM.