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natural convection of sphere in a box - buoyantSimpleFoam

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Old   January 26, 2021, 05:00
Post natural convection of sphere in a box - buoyantSimpleFoam
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Said CATALBAS
Join Date: Feb 2020
Location: Türkiye
Posts: 53
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Hi,

I want to simulate a simple natural convection heat transfer of a sphere in a box. Firstly, I created a blockMesh geometry and then I merged it with gmsh sphere. Sphere is 400K and y1,y2 is 290K, other BCs zeroGradient. When i'm run it there is no heat transfer between sphere and air. If something wrong with merging should i continue with chtMultiRegion? I'm open to any suggestions. I added the case in attachment.

Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2012                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volScalarField;
    location    "0";
    object      T;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 0 0 1 0 0 0];

internalField   uniform 290;

boundaryField
{
    frontAndBack
    {
        type            zeroGradient;
    }

    topAndBottom
    {
        type            zeroGradient;
    }

    y1
    {
        type            fixedValue;
        value           uniform 290;
    }

    y2
    {
        type            fixedValue;
        value           uniform 290;
    }

    kure //sphere
    {
        type            fixedValue;
        value           uniform 400;
    }
}


// ************************************************************************* //
Best regards,
Said
Attached Images
File Type: jpg hotSphereSS1.jpg (84.8 KB, 13 views)
File Type: jpg hotSphereSS2.jpg (198.4 KB, 15 views)
Attached Files
File Type: zip hotSphereNatCon.zip (8.4 KB, 3 views)
File Type: zip logbuoyantSimpleFoam.zip (37.7 KB, 6 views)
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