The Gravity global feature is automatically added when Include Gravity is selected at the interface level in the Physical Model settings. A volume force and a source term are added on the right-hand side of the momentum and energy equations, respectively.

The Acceleration of gravity (SI unit m/s2, default value −gconstez in 2D axial symmetry and 3D and −gconstey in 2D) is used to define the gravity forces. It should be a global quantity.