Thanks I'll try that hosting site.
Yes, turbulence. I'm currently researching the mechanics behind transition between two steady state pipe or channel flows where both flowes are turbulent. I use direct numerical simulations with the results validated empirically through hot film and hot wire manometry. To me it is interesting stuff as a lot of it mimics lamina to turbulent transition but with radial or span wise fluctuations not seen when studying classical transition.
Iv not ran any CFD simulations over a vehicle, Iv slowly been working on a simulation of my midget but I may never finish it. I get very similar problems with muck inside the windscreen on that.