[birendra_iitkgp]

I am trying to simulate a split T junction in openFoam using the InterFoam capillaryRise case file using PISO. I have generated the mesh using Fluent. But while patching the phases in setFieldsDict, no cells are getting selected for the water phase. Where am I going wrong??

Alpha.water file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
arch "LSB;label=32;scalar=64";
class volScalarField;
location "0";
object alpha.water;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 0 0 0 0 0 0];

internalField uniform 0;

boundaryField
{
inlet_oil
{
type fixedValue;
value uniform 0;
}
inlet_water
{
type fixedValue;
value uniform 1;
}
outlet_1
{
type zeroGradient;
}
outlet_2
{
type zeroGradient;
}
walls
{
type constantAlphaContactAngle;
theta0 145;
limit gradient;
value uniform 0;
}
}


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

p_rgh file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p_rgh;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

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

internalField uniform 0;

boundaryField
{
inlet_oil
{
type fixedFluxPressure;
}

inlet_water
{
type fixedFluxPressure;
}

outlet_1
{
type fixedValue;
value uniform 0;
}


U_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ 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
{
inlet_oil
{
type fixedValue;
value uniform (0.0278 0 0); // flow in x-dir
}

inlet_water
{
type fixedValue;
value uniform (0 0.00833 0); // flow in y-dir
}

outlet_1
{
type zeroGradient;
}

outlet_2
{
type zeroGradient;
}

walls
{
type fixedValue;
value uniform (0 0 0);
}

defaultFaces
{
type fixedValue;
value uniform ( 0 0 0 );
}
}


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


g_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class uniformDimensionedVectorField;
object g;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 1 -2 0 0 0 0];
value (0 0 -9.81); // gravity in neg z-dir


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

transportProperties_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

phases (water oil);

water
{
transportModel Newtonian;
nu [ 0 2 -1 0 0 0 0 ] 9.808e-07;
rho [ 1 -3 0 0 0 0 0 ] 938;
}

oil
{
transportModel Newtonian;
nu [ 0 2 -1 0 0 0 0 ] 0.00003337869;
rho [ 1 -3 0 0 0 0 0 ] 859.83;
}

sigma 0.00436; // surface tension in N/m


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

turbulenceProperties_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object turbulenceProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

simulationType laminar;


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

ControlDict_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application interFoam;

startFrom latestTime;

startTime 0;

stopAt endTime;

endTime 1;

deltaT 1e-5;

writeControl adjustable;

writeInterval 0.005;

purgeWrite 0;

writeFormat ascii;

writePrecision 6;

writeCompression off;

timeFormat general;

timePrecision 6;

runTimeModifiable yes;

adjustTimeStep yes;

maxCo 0.25;

maxAlphaCo 0.2;

maxDeltaT 1;


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

fvSchemes_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

ddtSchemes
{
default Euler;
}

gradSchemes
{
default Gauss linear;
grad(U) Gauss linear;
grad(p) Gauss linear;
grad(alpha) Gauss linear; // Green-Gauss node-based gradient calculation
}

divSchemes
{
default none;
div(rhoPhi,U) Gauss linearUpwind grad(U); // Second-order upwind for velocity
div(phi,alpha) Gauss vanLeer; // For VOF method, sometimes PLIC is handled internally
div(phirb,alpha) Gauss linear;
div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
}

laplacianSchemes
{
default Gauss linear corrected;
}

interpolationSchemes
{
default linear;
}

snGradSchemes
{
default corrected;
}


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

fvSolution_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{
alpha.water
{
nAlphaCorr 1;
nAlphaSubCycles 2;
cAlpha 1;
solver smoothSolver;
tolerance 1e-07;
relTol 0;
}

"pcorr.*"
{
solver PCG;
preconditioner DIC;
tolerance 1e-10;
relTol 0;
}

p_rgh
{
solver PCG;
preconditioner DIC;
tolerance 1e-07;
relTol 0.05;
}

p_rghFinal
{
$p_rgh;
tolerance 1e-07;
relTol 0;
}

U
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-06;
relTol 0.05;
}

UFinal
{
$U;
tolerance 1e-06;
relTol 0;
}
}

PISO
{
nCorrectors 2;
nNonOrthogonalCorrectors 0;
pRefCell 0;
pRefValue 0;
momentumPredictor yes;
}


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

setFieldsDict_file

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object setFieldsDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

defaultFieldValues
(
volScalarFieldValue alpha.water 0
);

regions
(
boxToCell
{
box (-1.83697e-20 -0.0003 0) (0.00155 0.00065 0.0001);
fieldValues
(
volScalarFieldValue alpha.water 0
);
}

boxToCell
{
box (0.000249999 -0.00029999 0.0001) (0.000349999 -0.00014999999 0);
fieldValues
(
volScalarFieldValue alpha.water 1
);
}
);


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

I am unable to understand where I am going wrong or missing something. Please help.