Autodesk Project Falcon. I haven't used it. I need a memory upgrade.
Autodesk Labs Project Falcon wind tunnel simulation
Older threads: 07-08-2012 -- Testing Aerodynamics Through Software
http://ecomodder.com/forum/showthrea...are-22516.html
01-27-2012 -- Free 2D/3D Computational fluid dynamics program
http://ecomodder.com/forum/showthrea...ram-20294.html