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The “Container” node is not an emitter in a traditional sense. It is simply a place where particles can be added. With these particle-shifting methods you always have to make sure that the source emitter (here: “Circle01”) and the container have exactly the same “Resolution” values, because otherwise you will see exploding particles. Here are the settings:
- Node Params > Particles > Resolution > 75.0
- To make the foam float, change its density: Node Params > Particles > Density > 900.0
- Keep the foam particles closer together with Node Params > Particles > Int Pressure > 0.5
- Node Params > Node > Color > choose white
The decreased “Density” will make the foam float on top of the fluid, and the colours help to separate the foam from the fluid visually.
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