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The scene shows how to make a droplet splash. The liquid is emitted from a sphere with Initial Liquid Fill turned on from the Phoenix Properties. The Initial Fillup is set to 10 so that there will be some liquid at the bottom when the simulation is started. The Surface Tension Strength is set to 0.24 and the Droplet Formation is set to 1 so the liquid will break up into separate droplets.

Image ModifiedThe scene shows cascading setup between two simulators. The Phoenix Source clamps the texture values between 0-1 so smoke and fuel will naturally transition fine, but temperature which goes above 1 - up to several thousand Kelvin - will need to be remapped before being plugged into the source. This is why an Output map is added after the grid texture reading the Temperature channel. The temperatures for the source for sim 1 and for the brush source are set to 2000K, and the Output Amount of the Output map to 1/2000 = 0.0005.

- You need to enable Motion Velocity on the Brush source so that the velocities will be transferred as well and of course you need to have velocity exported from the first sim.
- The area which overlaps will be rendered twice, unless you put a box as a render cutter for the first sim.
- Grid-based self-shadowing won't work between the cascade grids - you need to switch to the slower but more robust Ray-Traced self-shadowing.