Gravity
The Gravity node adds the force ρg to the right-hand side of the momentum transport equation.
Gravity
Enter the components of the Gravity vector, g (SI unit: m/s2). The default value is (0,-g_const) where g_const is a physical constant equal to 9.8066 m/s2.
For 2D components, gravity acts in the negative y direction by default. For example, in a 2D component, the y component is -g_const and the other component is 0. In this setting, g_const is a predefined physical constant for the standard gravity (acceleration due to gravity at sea level).
For 3D and 2D axisymmetric components, gravity acts in the negative z direction by default. For example, in a 3D component, the z component is -g_const and the other components are 0. In this setting, g_const is a predefined physical constant for the standard gravity (acceleration due to gravity at sea level).