In this video you will learn how to send particles into a volume and then rotate them with the help of a vortex. I then used two liquids that do not mix. To do this I used the negative option of metaballs associated with a second metaball system with another name and material. This small system would not work for a massive use of fluid but in this case it simulates not too badly the repulsive effect between the two elements.
The tutorial focuses on this part. I might do a tutorial on stage lighting of this type in another video. I hope this video will be useful for you. Feel free to leave me a comment and ask your questions.