[tom.opt]

Hi All,
Has anyone simulated quiescent air in openfoam and knows what kind of boundary conditions should be used?





I am trying to simulate with rhoSimpleFoam the behaviour of a thrust/velocity applied at a point in a 2D plane but for some reason i seem to get negative velocities.
My current p and U files are:


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.4.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [1 -1 -2 0 0 0 0];

internalField uniform 100000;

boundaryField
{
defaultFaces
{
type empty;
}
walls
{
type zeroGradient;
}


inlet
{
type zeroGradient;
}
outlet
{
type fixedValue;
value $internalField;
}
}

// ************************************************** ***********************

//
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.4.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volVectorField;
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 1 -1 0 0 0 0];

internalField uniform (0 0 0);

boundaryField
{
defaultFaces
{
type empty;
}

walls
{
type noSlip;
}
inlet
{
type flowRateInletVelocity;
massFlowRate 1e-6;
value $internalField;
}
outlet
{
type inletOutlet;
value uniform (0 0 0);
inletValue $internalField;
}
}

// ************************************************** *********************** //