foam-extend4.1-coherent-io/tutorials/incompressible/porousSimpleFoam/beaverJoseph/0/U

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | foam-extend: Open Source CFD                    |
|  \\    /   O peration     | Version:     3.1                                |
|   \\  /    A nd           | Web:         http://www.extend-project.de       |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volVectorField;
    object      U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

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

// Re = 1 = rho=(rho U H)/mu; rho=1.144, mu=1.861e-5; H=0.01
internalField   uniform (1.62589e-4 0 0);

boundaryField
{
    inlet
    {
        // type            groovyBC;
        type fixedValue;
        variables "relax=0.7;UTarget=1.62589e-4;Uout@outlet=sum((pos().y) > 0.1 ? mag(U)*mag(Sf()) : 0.)/sum(pos().y > 0.1 ? mag(Sf()) : 0);Uold=mag(U);Uo=(Uout>1e-7 ? Uout : 1e-7);Unew=Uold*((1-relax)+relax*(UTarget/Uo));Unew2=(Unew > UTarget ? UTarget : Unew);";
        valueExpression "vector(1,0,0)*Unew2";
        value           $internalField;
    }
    outlet
    {
        type            inletOutlet;
        inletValue      uniform (0 0 0);
        value           uniform (0 0 0);
    }
    upperWall
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }
    lowerWall
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }
}

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