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buoyantSimpleFoam + porous zone

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Old   July 14, 2014, 07:42
Default buoyantSimpleFoam + porous zone
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Hi,

is it possible to model porous zone with buoyantSimpleFoam or bouyantPimpleFoam? I have tried to add the porous zone into fvOptions but the solver failed (I think) due to messing thermodynamic properties of the porous zone. Can somebody advise me please how to implement this?


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Old   July 14, 2014, 11:09
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hi atlan,

I tried it before by modifying the buoyantBoussinesqSimpleFoam but I gave up. and still I wanna do it, if my works let me do that!
what's the error? did u make the solver correctly?

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Mostafa
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Old   July 16, 2014, 09:48
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Hi Mostafa,
Thank you for the answer.

I have not made any solver, which is probably the problem. Is there any solver which is applicable for the calculation of heat transfer (wall conduction) including the porous wall?
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Old   July 16, 2014, 09:53
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AFAIK, nope, there isn't such a solver.
you should add energy equation for clear fluid and porous zone yourself.
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Old   July 20, 2014, 09:03
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I am not sure, that I understand what you want to do, but I used the following fvOptions successfully with buoyantPimpleFoam:
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.2.2                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      fvOptions;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

porosityBlockage
{
    type            explicitPorositySource;
    active          off;
    selectionMode   cellZone;
    cellZone        porous;

    explicitPorositySourceCoeffs
    {
        type            DarcyForchheimer;

        DarcyForchheimerCoeffs
        {
            d   d [0 -2 0 0 0] (1e9 1e9 0);
            f   f [0 -1 0 0 0] (1e9 1e9 0);

            coordinateSystem
            {
                e1  (1 0 0);
                e2  (0 1 0);
            }
        }
    }
}


// ************************************************************************* //
(this example was used to force a certain velocity direction in the porous zone)
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Old   July 24, 2014, 03:33
Default Porous zone + BuoyantSimpleFoam - SOLVED
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Thank you,

This really works. In fvOptions you can also add the porous zone temperature.

Atlan
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