[Bdew8556]

HI all,

I'm looking at doing a simple simulation of a fan using simpleFoam.
Basically I'm unsure of the U and p conditions. It's a supply fan, so air comes in the "fan_inlet" then exits the "fan_outlet" at a higher speed.

Currently I've got:

for U

fan_inlet
{
type flowRateOutletVelocity;
volumetricFlowRate constant 0.01;
}

fan_outlet
{
type flowRateInletVelocity;
volumetricFlowRate constant 0.01;
}

and for P....

fan_inlet
{
type fixedValue;
value uniform 84437.5;
}

fan_outlet
{
type fanPressure;
file "./constant/fanCurve";
outOfBounds clamp;
direction out;
U U;
phi phi;
p0 uniform 84437.5;
value uniform 0;
}

It's only a small model so that's why the volumetric flow rate is low.

when I stop it after 200 iterations the flow rates at the fan inlet and outlet dont match.

Any thoughts???