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Using createBafflesDict to create cyclic baffle

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Old   November 22, 2020, 18:36
Default Using createBafflesDict to create cyclic baffle
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Farzad Faraji
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Dear friends
Previously, I have used createBafflesDict to create a thin wall and it worked, but when I used this created wall to inject particles, It cant inject particles. Bases on this I want to try to create "cyclic baffle", but I do not know how to generate "neighbourPatch", then I want to use this cyclic baffle to inject particles to my domain. Note that, my main purpose is to inject particles in somewhere close to middle of my domain.



Code:
/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  6
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      createBafflesDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

// Whether to convert internal faces only (so leave boundary faces intact).
// This is only relevant if your face selection type can pick up boundary
// faces.
internalFacesOnly true;

// Example using "blades" as name of baffle patch
baffles
{
    baffles  // group name
    {
        //- Use predefined faceZone to select faces and orientation.
        type        faceZone;   //faceZone;
        zoneName    BubblePlXXFaceZone;   //blades;

        patches
        {
            master
            {
                name        blades;  // patch name
                type        cyclic;
                neighbourPatch  *****; 

            }
            slave
            {
                $master;
            }
        }
    }
}


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

Thanks,
Farzad
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Old   December 15, 2020, 02:32
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Max
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Quote:
Originally Posted by farzadmech View Post
Dear friends
Previously, I have used createBafflesDict to create a thin wall and it worked, but when I used this created wall to inject particles, It cant inject particles. Bases on this I want to try to create "cyclic baffle", but I do not know how to generate "neighbourPatch", then I want to use this cyclic baffle to inject particles to my domain. Note that, my main purpose is to inject particles in somewhere close to middle of my domain.



Code:
/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  6
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      createBafflesDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

// Whether to convert internal faces only (so leave boundary faces intact).
// This is only relevant if your face selection type can pick up boundary
// faces.
internalFacesOnly true;

// Example using "blades" as name of baffle patch
baffles
{
    baffles  // group name
    {
        //- Use predefined faceZone to select faces and orientation.
        type        faceZone;   //faceZone;
        zoneName    BubblePlXXFaceZone;   //blades;

        patches
        {
            master
            {
                name        blades;  // patch name
                type        cyclic;
                neighbourPatch  *****; 

            }
            slave
            {
                $master;
            }
        }
    }
}


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

Thanks,
Farzad

Hello Farzad,

If I have understood your intention correctly, then you can also use a CellZoneInjection for the injection of the particles, whereby your cell zone must then have the shape of a cylinder. For example you can draw the necessary CellZone in blender, import it as an .stl and define it as a CellZone using snappyHexMesh.
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