boundary condition
 

Dear all,

consider this model,

http://img174.imageshack.us/my.php?image=heartwi1.png

i have modelled that in cfx 11, let me explain my problem to you, i want to see how pressure changes in those places as velocity changes in two red places. as you see in the model the blue boundaries have got constant pressure and i dont want that,

it would be great if someone let me know the solution,

Regards, alireza