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Adding a new parameter to the injected particles

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Old   March 29, 2021, 17:24
Default Adding a new parameter to the injected particles
  #1
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Farzad Faraji
Join Date: Nov 2019
Posts: 206
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Dear friend
I want to add a property(exactly like "rho" for particles) to my particle properties. Actually I want to add "Mass Fraction" at the injection to my particles. I know that I should change KinematicParcel.C and KinematicCloud.C (constructor part), but it is a little ambiguous to me which one is an Eulerian parameter and which one is a Lagrangian parameter(I make them RED). Lets I copy the code here;

Code:
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class CloudType>
Foam::KinematicCloud<CloudType>::KinematicCloud
(
    const word& cloudName,
    const volScalarField& rho,
    const volVectorField& U,
    const volScalarField& mu,
    const dimensionedVector& g,
    bool readFields
)
:
    CloudType(rho.mesh(), cloudName, false),
    kinematicCloud(),
    cloudCopyPtr_(nullptr),
    mesh_(rho.mesh()),
    particleProperties_
    (
        IOobject
        (
            cloudName + "Properties",
            rho.mesh().time().constant(),
            rho.mesh(),
            IOobject::MUST_READ_IF_MODIFIED,
            IOobject::NO_WRITE
        )
    ),
    outputProperties_
    (
        IOobject
        (
            cloudName + "OutputProperties",
            mesh_.time().timeName(),
            "uniform"/cloud::prefix/cloudName,
            mesh_,
            IOobject::READ_IF_PRESENT,
            IOobject::NO_WRITE
        )
    ),


Thanks,
Farzad
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Old   March 30, 2021, 11:24
Default Extra explanation
  #2
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Farzad Faraji
Join Date: Nov 2019
Posts: 206
Rep Power: 8
farzadmech is on a distinguished road
Dear friends
After reviewing the code for few times, I remembered that I remember that the green lines are for Eulerian rho(density of Fluid) and red lines are for Lagrangian(density of particle) as below;


[CODE]

Code:
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class CloudType>
Foam::KinematicCloud<CloudType>::KinematicCloud
(
    const word& cloudName,
    const volScalarField& rho,
    const volVectorField& U,
    const volScalarField& mu,
    const dimensionedVector& g,
    bool readFields
)
:
    CloudType(rho.mesh(), cloudName, false),
    kinematicCloud(),
    cloudCopyPtr_(nullptr),
    mesh_(rho.mesh()),
    particleProperties_
    (
        IOobject
        (
            cloudName + "Properties",
            rho.mesh().time().constant(),
            rho.mesh(),
            IOobject::MUST_READ_IF_MODIFIED,
            IOobject::NO_WRITE
        )[/COLOR]
    ),
    outputProperties_
    (
        IOobject
        (
            cloudName + "OutputProperties",
            mesh_.time().timeName(),
            "uniform"/cloud::prefix/cloudName,
            mesh_,
            IOobject::READ_IF_PRESENT,
            IOobject::NO_WRITE
        )
    ),
Now the main question is that how can I add another parameter like a mass fraction(Y) to the Lagrangian parameters?


Thanks,
Farzad
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