The artist used Geometry Nodes to create the whitewater particles.
Blender Artist Cimetsys has demonstrated a realistic-looking beach simulation made using the Flip Fluids plug-in and Blender. According to the project's description, the scene is made using a cylinder with a displaced modifier that is moving up and down. For whitewater particles (foam and bubbles) the artist utilized Geometry Nodes. The simulation was rendered at 30 FPS at 960*480 resolution with 80 seconds per frame on RTX 2060. The goal of the project, comments the creator, was to make a realistic water/whitewater simulation that aspiring artists can use so as not to start from scratch with Flip Fluids parameters.
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