/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  dev
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/

inletMassFlowRate
{
    type            surfaceFieldValue;
    libs            ("libfieldFunctionObjects.so");

    fields
    (
        alphaRhoPhi.gas
        alphaRhoPhi.liquid
    );

    writeFields     false;
    log             true;
    surfaceFormat   none;

    select          patch;
    name            inlet;

    operation       sum;

    writeControl    timeStep;
}

outletMassFlowRate
{
    type            surfaceFieldValue;
    libs            ("libfieldFunctionObjects.so");

    fields
    (
        alphaRhoPhi.gas
        alphaRhoPhi.liquid
    );

    writeFields     false;
    log             true;
    surfaceFormat   none;

    select          patch;
    name            outlet;

    operation       sum;

    writeControl    timeStep;
}

totalMass
{
    type            coded;

    // Load the library containing the 'coded' functionObject
    libs            ("libutilityFunctionObjects.so");

    codeExecute
    #{
        const volScalarField& alphaGas =
            mesh().lookupObject<volScalarField>("alpha.gas");
        const volScalarField& alphaLiquid =
            mesh().lookupObject<volScalarField>("alpha.liquid");

        const volScalarField& rhoGas =
            mesh().lookupObject<volScalarField>("rho.gas");
        const volScalarField& rhoLiquid =
            mesh().lookupObject<volScalarField>("rho.liquid");

        const scalarField& v = mesh().V();

        Info<< "coded totalMass output:" << endl
            << "    volIntegrate(all) for alpha.gas*rho.gas = "
            << gSum(alphaGas*rhoGas*v) << endl
            << "    volIntegrate(all) for alpha.liquid*rho.liquid = "
            << gSum(alphaLiquid*rhoLiquid*v) << endl
            << endl;
    #};
}

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