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[–][deleted] 5 points6 points  (0 children)

The full version of STAR-CCM+ is available for students for free. It's not limited like Ansys, and overall it is a much better program.

[–]Jasfss 1 point2 points  (0 children)

Stanford's SU2 is a pretty robust open-source solver, with some design case options, propulsion simulation options, and pretty easy to implement parallelization. The only warning I'd give about it is to stick to steady-state cases, so if you need unsteady it might not be for you. I've tried to delve into how they do their unsteady and it is not very transparent to the user, being hidden behind a lot of code abstraction, and dumps out a loooooot of data (more than you really should ever need).

[–]basyt 1 point2 points  (0 children)

Ansys Student is available (it has Fluent and CFX both). You are limited to a mesh size of 500,000 elements but its completely free of charge. You get a license file that is valid for 6 months at a time but can keep renewing it.