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Entry 'UFinal' not found in dictionary

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Old   November 19, 2021, 07:05
Default Entry 'UFinal' not found in dictionary
  #1
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Jacob H
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Hi, OpenFoam newbie here.
Im trying to implement a pimpleFoam solver for the OpenFoam v2106 simpleFoam tutorialcase for a backwards facing step.
No matter what i do the same error seems to arrise. What am i doing wrong here?

fvSolution file;
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2106                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

{
    p
    {
        solver           GAMG;
        smoother         DICGaussSeidel;
        tolerance        1e-4;
        relTol           0.001;
    }
    pFinal
    {
        $p;
        relTol          0;
    }

    "(U|k|epsilon|omega)"
    {
        solver          smoothSolver;
        smoother        symGaussSeidel;
        tolerance       1e-6;
        relTol          0.1;
    }

    "(U|k|epsilon|omega)Final"
    {
        $U;
        tolerance       1e-06;
        relTol          0;
    }

}

PIMPLE
{
    nNonOrthogonalCorrectors 0;
    nCorrectors          1;
    nOuterCorrectors    50;

    residualControl
    {
        U
        {
                tolerance  1e-5;
                relTol      0;
        }
        p
        {
                tolerance  1e-4;
                relTol      0;
        }
     }
}

relaxationFactors
{
    fields
    {
        p      0.8;
        pFinal   1;
    }
    equations
    {
        "(U|k|epsilon|omega)"     0.8;
        "(U|k|epsilon|omega)Final"   1;
    }
}

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




Error log;
Code:
Create time

Create mesh for time = 0


PIMPLE: Operating solver in PISO mode

Reading field p

Reading field U

Reading/calculating face flux field phi

Selecting incompressible transport model Newtonian
Selecting turbulence model type RAS
Selecting RAS turbulence model kOmegaSST
Selecting patchDistMethod meshWave
RAS
{
    RASModel        kOmegaSST;
    turbulence      on;
    printCoeffs     on;
    alphaK1         0.85;
    alphaK2         1;
    alphaOmega1     0.5;
    alphaOmega2     0.856;
    gamma1          0.555556;
    gamma2          0.44;
    beta1           0.075;
    beta2           0.0828;
    betaStar        0.09;
    a1              0.31;
    b1              1;
    c1              10;
    F3              false;
    decayControl    false;
    kInf            0;
    omegaInf        0;
}

No MRF models present

No finite volume options present
Courant Number mean: 0.00934313 max: 0.11311
turbulenceFields stressComponents: storing fields:
    turbulenceProperties:devReff

pressure pressureCoefficient:
    Operating mode: staticCoeff
    Not including hydrostatic effects

Reading set description:
    Uref
    x_by_h_m04
    x_by_h_01
    x_by_h_04
    x_by_h_06
    x_by_h_10

wallShearStress wallShearStress:
    processing all wall patches


Starting time loop

Courant Number mean: 0.00934313 max: 0.11311
deltaT = 0.00120005
Time = 0.00120005

PIMPLE: iteration 1


--> FOAM FATAL IO ERROR: (openfoam-2106)
Entry 'UFinal' not found in dictionary ""


    From const Foam::dictionary& Foam::dictionary::subDict(const Foam::word&, Foam::keyType::option) const
    in file db/dictionary/dictionary.C at line 537.

FOAM exiting
Best,
J
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Old   November 23, 2021, 17:18
Default
  #2
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Tom Fahner
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Hi J,

My guess would be that you miss the solvers keyword:

Code:
/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2106                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{
    p
    {
        solver           GAMG;
        smoother         DICGaussSeidel;
        tolerance        1e-4;
        relTol           0.001;
    }
    pFinal
    {
        $p;
        relTol          0;
    }

    "(U|k|epsilon|omega)"
    {
        solver          smoothSolver;
        smoother        symGaussSeidel;
        tolerance       1e-6;
        relTol          0.1;
    }

    "(U|k|epsilon|omega)Final"
    {
        $U;
        tolerance       1e-06;
        relTol          0;
    }

}

PIMPLE
{
    nNonOrthogonalCorrectors 0;
    nCorrectors          1;
    nOuterCorrectors    50;

    residualControl
    {
        U
        {
                tolerance  1e-5;
                relTol      0;
        }
        p
        {
                tolerance  1e-4;
                relTol      0;
        }
     }
}

relaxationFactors
{
    fields
    {
        p      0.8;
        pFinal   1;
    }
    equations
    {
        "(U|k|epsilon|omega)"     0.8;
        "(U|k|epsilon|omega)Final"   1;
    }
}

// ************************************************************************* //
In your example the bold line is missing. Not 100% sure if that would solve it, but worth a try.

Cheers,
Tom
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