Fluent pressure and convergence problems
 

Hi,
I have a problem on Fluent I've just started to learn CFD. In fact, I couldn't search well because I don't know how the problem is denoted. I followed up a tutorial video which is about naca4412 airfoil's analysis step by step but I couldn't attain the same result. Let me explain the problem with images;

http://imagizer.imageshack.us/v2/640...924/Fqw6Gn.png

http://imagizer.imageshack.us/v2/640...924/QvLkb0.png

http://imagizer.imageshack.us/v2/640...922/3geTjw.png

There are convergence problems even if I run 5000 iterations

http://imagizer.imageshack.us/v2/640...921/OsyVBP.png

Moreover, strange pressure distribution.

What can be the problem or problems ? Thanks for your help.