I'm fascinated by how this works. Does it do any CFD type of simulation of the gas flow in the engine? Is the simulation entirely 2D? I've thought about doing

I'm fascinated by how this works. Does it do any CFD type of simulation of the gas flow in the engine? Is the simulation entirely 2D? I've thought about doing a similar project myself but would like to be able to simulate the effects of engine tuning techniques such as "porting" of the cylinder head. I think that is quite hard - I don't think a simple incompressible flow CFD simulation would be sufficient. Particularly if you wanted to simulate the pressure waves in a tuned-length-induction system, I'm pretty sure you'd need compressible flow. I haven't been able to find any suitable tutorials on simulating compressible flow. Most of the teaching material I found starts with vast amounts of pencil and paper maths exercises and assumes graduate level vector calculus. I want something that starts with for loops and a hand waving understanding of the concepts of vector calculus. I think you could still do something interesting in 2D. I've struggled to find anywhere to discuss such ideas.