## 12.19.2 Including Turbulence Generation Due to Buoyancy

If you specify a non-zero gravity force (in the Operating Conditions panel), and you are modeling a non-isothermal flow, the generation of turbulent kinetic energy due to buoyancy ( in Equation  12.4-1) is, by default, always included in the equation. However, 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.

Previous: 12.19.1 Including the Viscous
Up: 12.19 Setup Options for
Next: 12.19.3 Vorticity- and Strain/Vorticity-Based