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Newbie help: IcoFoam air duct

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Old   March 30, 2019, 09:11
Default Newbie help: IcoFoam air duct
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Victor
Join Date: Mar 2019
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Hi!

I'm trying to teach myself openFoam. I've been running a simple simulation using icoFoam. I want to simulate air going in at 4m/s at one end and then see the flow trough two outputs at atmospheric pressure. This should be a top view if that matters.

I've attaced a link showing my results. Can any one spot my mistake(s)? The animation looks pretty weird to me.


Video (real time):
https://betamax.video/videos/watch/1...6-4432c8b4503f



Please tell me if you need more information.



!PS bonus question How would I model a damper at one of the outlets?


transportProperties:

nu [0 2 -1 0 0 0 0] 0.000015;

p:
Code:
dimensions      [0 2 -2 0 0 0 0];
internalField   uniform 0;
boundaryField
{
    wall-4
    {
        type            zeroGradient;
    }

    velocity-inlet-5
    {
        type            zeroGradient;
    }

    velocity-inlet-6
    {
        type            fixedValue;
        value           uniform 0;
    }

    pressure-outlet-7
    {
        type            fixedValue;
        value           uniform 0;
    }

    wall-8
    {
        type            zeroGradient;
    }

    frontAndBackPlanes
    {
        type            empty;
    }
}
U:
Code:
dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0 0 0);

boundaryField
{
    wall-4
    {
        type            noSlip;
    }

    velocity-inlet-5
    {
        type            fixedValue;
        value           uniform (-4 0 0);
    }

    velocity-inlet-6
    {
        type            zeroGradient;
    }

    pressure-outlet-7
    {
        type            zeroGradient;
    }

    wall-8
    {
        type            noSlip;
    }

    frontAndBackPlanes
    {
        type            empty;
    }
}
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