Vortex.A - touch-interactive generative art. I am experimenting with fluid dynamics: how liquids and gases behave - a classically difficult problem in physics/maths. Most agree that fluid dynamics is described by the Navier-Stokes differential equations. There is no known all-case solution for the equations, but there are solutions for specific cases and approximative methods to find numerical solutions.
I'm experimenting with my own approach and it is making some pretty promising animations. This app visualizes the flow by emitting particles where you touch the screen (multi-touch works) and the fluid itself is also affected by touch. The lines are so called "pathlines" that trace the particles' paths over time.
I'm polishing the technology and hoping to bring it to VFX/motion graphics artists as a tool for fluid dynamics animations in the future.
The price is 99 cents and it's available in AppStore.
Check out CreativeApplications.net's article, contains video! Or proceed to view video on Vimeo. Or, if you have flash, check out the video below (note that this video is from iPhone, on iPad it looks different)