Hey, guys check this amazing C4D Quick Tip by Jonas Pilz shows you all the steps you need to create a Curl Noise effect in Cinema 4D Release 21.
How to make a curl noise effect in C4D with particles and field forces.
Starting with creating a Curl Noise Vector Volume, he will use the new Field Force object to make particles follow the Curl Noise. In the end, he traces the particles to get nice Curl Noise splines.