As I always like to think about it, it's all about the physics. I tell it like that when I have to hear that bland statement over and over again of "Solidworks Simulation is for getting a vague idea, and if you want real answers you need a more expensive package" which to be honest, is just not true. If you have a problem that requires fairly specialised physics, you go to a more expensive package but for most design engineering systems your results are just as accurate using FlowSim, that's what it is aimed at and that's what it sets out to do.
With that out of the way, my question: Why does Solidworks Flow Simulation do high mach number flow? It seems like a fairly specialised application, or am I mistaken? Is high mach number flow common in design engineering flow problem statements? Or is it there because that's the legacy of the FlowSim code and its there kind of "for free" anyway so let's just include it then?
I'm pretty new to Flow, don't myself use Flow, so I for one am curiously confused
There has been a lot of experimental and theoretical work done on space vehicle re-entry, which involves high mach number flow. There has also been a lot of work done on supersonic aircraft. Because there is a huge body of work in both areas, it makes it relatively easy to validate CFD results against actual results.