Lattice Boltzmann methods for fluid simultations

I am wondering could you do a tutorial of 2d (or even 3d?) fluid simulation tutorial? It would be a very challenging topic. Since this project could be very complicated, I think doing a simple one is already ok. For example, use processing to make a constant flow of fluid and place a circular obstacle inside it. If you have time, you can also treat the fluid as a field of vectors and place particles to observe their movements. Hope you can accept this challenge XD. BTW, you performed very well during the previous challenges. Keep on the good work.

You may have a look at this pdf for reference: (found from the internet)
http://www.cims.nyu.edu/~billbao/report930.pdf