[Chioma]

Hello everyone,

Please can someone help me out. My geometry is a simple cylinder with boundaries as base, wall and top. The boundary condition for velocity field at the base is (0.5y,0.5x,0). I realized that I have to use funkySetFields in order to introduce such conditions. This I did using the dictionary option, a sample of my dictionary is

expression
(
base
field U;
expression "vector (0.5*pos().y, 0.5*pos().x, 0)";
)
it worked but unfortunately, it computed for the whole cylinder which has a total of 154000 cells.
I am presently trying to use "conditions" so that the expression is only applied at the base. I used
conditions "pos().z=0", but I keep getting an error of invalid character.

I decided to give this condition since there is no z component at the base.

Please, I need a command which applies this condition only to the base and not the whole geometry.

Thanks