[ehsanshams]

hi,
I am trying to solve flow in a horizontal duct with inflow/outflow and constant temperature walls (top and bottom). I tried to solve it using buoyantPimpleFoam. I am not sure what I am doing wrong in my boundary conditions that give me unreasonable results.

I will appreciate any helpful comments.

my inlet BCs:

U:
inlet
{
type surfaceNormalFixedValue;
refValue uniform -0.01;
}

T:
inlet
{
type zeroGradient;
}

p:
inlet
{
type calculated;
value $internalField;
}

p_rgh:
inlet
{
type fixedValue;
value uniform 1e5;
}