This is a simulation of water splashing.

A C program applies the wave equations to a grid and creates the three wave effects: a sinusoidal source on the left, a circling point, and a raised rectangle that disappears after part of the frames.

The program displays a preview of dots using OpenGL, and can output heightfields, which I had POV-Ray render, here.

I want an effect close to this one for the liquid in the wine bottle in another project.