Gravity
The Gravity node adds the gravity force vector to the right-hand side of the momentum equations; ρcg for the continuous phase and ρdg for the dispersed phase.
Gravity nodes are mutually exclusive, that is, there can only be one active Gravity node per domain.
Gravity
Enter the components of the Gravity vector, g (SI unit: m/s2). For 2D components the default Gravity vector is defined as (0,-g_const). Here g_const is a physical constant equal to 9.8066 m/s2. For 3D and 2D axisymmetric components, the gravity acts in the negative z direction by default.