Some question to creators of this topic, who did some magnificent job:
I am doing quite the same, meaning trying to run a CFD for PERRINN model for my MSc. Even got approval to use some dedicated workstation at work for this process.
Yet, I am having trouble simplifying geometry. Especially sidepods and curvature around side intakes is causing a lot of trouble, even when I trie to merge it all. SpaceClaim and Fluent + Inventor in use and can't figure aut how to go around it, besides redrawing whole model.