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pressure initialization

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Old   January 1, 2016, 13:38
Default pressure initialization
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hossein hadi
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Dear Foamers,

I'm simulating fluid flow and heat transfer in a channel using buoyantBuossinesqSimpleFoam.

In normal geometry everything is OK, but when i use a converging channel geometry the calculations will not converge.

Actually the pressure starts with a very high value (about 3 bar, when I expect the converged pressure at inlet to be about 3kPa !!). So it takes a lot of time to decrease.

My pressure conditions are:
internalField   uniform 0;

        type            zeroGradient;

        type            zeroGradient;

        type            zeroGradient;

        type            fixedValue;
        value           uniform 0;
Please someone tell me how can I initialize pressure at inlet. (velocity is fixed at inlet)

Thanks a lot
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Old   January 3, 2016, 22:31
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nasir musa yakubu
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i would recommend you check out the following links:

best regards
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