[usefkeyghobadi]

Hi Foamer's
I want Simulate Viscoelastic's fluid in geometry that can see in attach file.
my problem is boundary condition.
my geometry produced by 3 rectangular that can see.
first part and third part have similar B.C's
for the first & third part:
up wall:symmetry plan
bottom wall:fixed wall
inlet for the first part,outlet for third part
and for the right and left wall what should i do?
and for the second part what should i do?(B.C's)
can i set all wall's , Fixed Wall?
Please help me.
Thank you,
Usef