The files 'go-home.png' and 'LatticeBoltzmannDemo.py' need to be in the PWD, when the Python script is run, for the Python script not to error out, as it stands.

Similarily, the files 'wing2d.png' and 'LatticeBoltzmann2D.py' would need to be in the same PWD.

This simulation, in addition to being in 2D, is only meant for study on a conceptual level. There is no intent to suggest, that its results quantitatively correspond to the properties of any real gas.

However, it is meant as a hint, about whether the fundamental properties of turbulence are a source of infinite complexity - which would put them into the category of chaotic Math - or whether they are ultimately deterministic.

I would say that the turbulence eddies repeat themselves, because the simulation is in 2D, and because the barrier which I have defined is the only barrier in the simulated universe, while the real universe potentially presents an infinitely complex barrier, so that physically, turbulence should have infinite complexity.

Dirk Mittler