An important characteristic of liquids is surface
tension. Surface tension is the attractive force between the molecules
of liquids, and is most noticeable in phenomena such as the formation
of water beads or liquid droplets on surfaces. You can use the Surface
Tension attribute to add realistic surface tension to
your liquid simulation.
Tension attribute adds an attractive force between nParticles
which keeps them together. The effect of Surface Tension is
most visible in liquid simulations after the nParticles object is
converted to an output mesh.
To add surface tension
- Go to frame 122, then dolly and tumble
the scene so that you a close-up view of the mesh pouring into the
- In the Outliner,
- In the Attribute Editor,
click the nParticle_WaterShape tab.
- In the Liquid Simulation section,
set Surface Tension to 0.3.
- Hide the Water_Mesh object
and cache your simulation.
To cache your simulation,
follow the steps in
Cache your nParticle simulation.
You can replace your existing nCache by selecting nCache>
Replace Cache instead of nCache > Create New
- Go to frame 122.
The mesh is noticeably
more uniform, and looks more like a flowing liquid.