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Under Hybrido > Viscosity Solver you can see two entries:
MAX iterations
In most cases, the default setting is sufficient, but under some circumstances it can be necessary to increase this value, for example when you see a warning message. Normally you will not see any misbehaving particles and you can proceed with the simulation. We recommend creating an OpenGL preview to see if the fluid behaves correctly.
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If you want to work on the curve, right-click on the value again, but this time choose “Open curve...” to launch RealFlow's “Curve Editor”. Alternatively it is also possible to use an expression to describe a curve. More about animation keys and expressions can be found here.
Variable Viscosity in Space
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