Hi guys please give me links to free or demo versions of digital/virtual wind tunnels

I am trying to make my own airfoil or test other airfoils. I want to have a program where I can plot my OWN airfoils and load existing airfoils and test them under certain conditions and angles of attack. The information I want to get from these tests is at what point along the wing EXACTLY does the boundary layer separate and how much lift and drag the body i drew produces- I would like to draw not only airfoils but other shape like fuselage shapes, but if only airfoils are allowed then fine.

PLEASE guys if you know of such programs then I would appreciate youd leave a comment with their name.

Lafayette, thanks.