xpFluidFX is an SPH fluid solver. It takes control over particles so that they interact in a fluid like way.

It creates very realistic fluid motion and is a good choice when simulating medium to large-scale fluid scenes.

Object tab menu for xpFluid FX.

Accuracy

Set at Fast, by default.

The alternatives are: Medium, High, Accurate and Custom.

If you select Custom, you can set your own values for Min Steps, Max Steps, CFL, Min Iterations, Max Iterations and Compression Limit.

With all other options, these settings are not available.

xpFluidFX_Accuracy_v01.mp4

Animation to demonstrate the Accuracy modes of Fast (on the left) and High (on the right).

Velocity Correction

Enabling this parameter causes xpFluidFX to correct the 'divergence' when the fluid starts to compress or expand.

Velocity Correction does an extra solve to change the velocity so the fluid flows around and does not compress/expand (divergence free).

Note: Turning this on will slow the simulation, so it is off by default.

Mode