[xinsui178]

Hi Foamer,


Could anyone tell me how to set up the boundary conditions as below?

My velocity is (u,v,w) regarding (x,y z)
Capture.JPG

Many thanks!

Xin

[Lisandro Maders]

Hello,

for v=0 and w=0, as your figure states, just set up like this:

[Lisandro Maders]

Hello Xin,

if you want the velocity to be zero at the walls, you can set up in your U file:

patchName
{
    type        noSlip;
}

or explicitly telling the velocity values at the wall patches:

patchName
{
    type        fixedValue;
    value       uniform (0 0 0);
}

For free slip BC, you can do:

patchName
{
    type        slip;
}

Regards,

Lisandro Maders