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InertialForces
InertialForces
Motion Inertia | ext_wind – When enabled, moving the simulator object over a series of frames causes inertial forces in the opposite direction of the movement. This allows you to link the simulator to a moving object and keep the size of the grid relatively small, as opposed to creating a large grid that covers the entire path of the moving object. Motion Inertia can be used for moving ground and water vehicles, torches, fireballs, rockets, etc. When this option is used together with the Initial Fill Up option and Open Container Wall conditions, a simulation of moving an object over a sea surface can be done. For more information, see the Motion Inertia example below.

UI Text Box
sizemedium
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When running liquid simulations with the Initial Fill Up option and Open Container Wall conditions, the surface of the generated liquid should remain smooth. If you encounter artifacts in the form of horizontal lines perpendicular to the direction of movement, with Motion Inertia enabled, please ensure that the Scene Scale is reasonable considering the type of effect being simulated. Other possible solutions in case tweaking the scale is not possible are to either increase the Steps per Frame, or to reduce the Cell Size of the Simulator.

Liquid artifacts usually appear when the liquid particles move a great distance between frames. Increasing the Scene Scale or the Steps per Frame allows them to stabilize, which in turn keeps the surface smooth.

Gravity | grav, gmul – When enabled, a standard gravity of 9.8 m/s 2  is automatically added. This value is a multiplier and scales the gravity accordingly. You can also use negative gravity.

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