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continuity error for pressure inlet and flowrate outlet

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Old   April 24, 2023, 15:44
Default continuity error for pressure inlet and flowrate outlet
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Haizhou
Join Date: Feb 2023
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Hi,

I am new to OpenFOAM and trying to run a laminar flow simulation using simplefoam with pressure inlet and flowrate outlet. However, I always get diverged results with large continuity errors. Any suggestions for this situation? The boundary condition files are attached below:
U:
dimensions [0 1 -1 0 0 0 0];

internalField uniform (0 0 0);

boundaryField
{

inlet
{
type outletInlet;
outletValue uniform (0 0 0);
value uniform (0 0 0);
}

outlet
{
type flowRateOutletVelocity;
volumetricFlowRate 5.676455641980107e-07;
value uniform (0 0 0);
}

walls
{
type noSlip;
}

}

P:

dimensions [0 2 -2 0 0 0 0];

internalField uniform 0;

boundaryField
{
inlet
{
type fixedValue;
value uniform 12.3260377358;
}

outlet
{
type zeroGradient;
}

walls
{
type zeroGradient;
}
}

Thanks in advance.

Best,
y
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continuity error, simplefoam convergence


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