[Andre1742]

Hi everybody,

I would like to run a simulation to check the results of my wind tunnel experiments. This experiment involves a truck tested in a wind tunnel at my university (nothing serious, just a university project).

The walls and the ground were fixed. I would like to impose this boundary condition in my OpenFOAM simulation. I tried to do this, but OpenFOAM is giving me an undefined error, and I'm not sure what I could change.

Any suggestions? Thank you all! Motrice, trailer, and ruote represent my model.

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volVectorField;
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 1 -1 0 0 0 0];

internalField uniform $flowVelocity;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

#include "include/fixedInlet"

outlet
{
type inletOutlet;
inletValue uniform (0 0 0);
value $internalField;
}

symmetryPlanepatch
{
type symmetryPlane;
}

lowerWall
{
type fixedValue;
value uniform (0 0 0);
}
upperWall
{
type fixedValue;
value uniform (0 0 0);
}
frontAndBack
{
type fixedValue;
value uniform (0 0 0);
}

Motrice
{
type fixedValue;
value uniform (0 0 0);
}
Trailer
{
type fixedValue;
value uniform (0 0 0);
}
Ruota1
{
type fixedValue;
value uniform (0 0 0);
}
Ruota2
{
type fixedValue;
value uniform (0 0 0);
}
Ruota3
{
type fixedValue;
value uniform (0 0 0);
}
Ruota4
{
type fixedValue;
value uniform (0 0 0);
}
Ruota5
{
type fixedValue;
value uniform (0 0 0);
}
Ruota6
{
type fixedValue;
value uniform (0 0 0);
}
Ruota7
{
type fixedValue;
value uniform (0 0 0);
}
Ruota8
{
type fixedValue;
value uniform (0 0 0);
}


}


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



/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 2 -2 0 0 0 0];

internalField uniform $pressure;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

inlet
{
type zeroGradient;
}
symmetryPlanepatch
{
type symmetryPlane;
}
outlet
{
type fixedValue;
value $internalField;
}
upperWall
{
type zeroGradient;
}

frontAndBack
{
type zeroGradient;
}
lowerWall
{
type zeroGradient;
}

Motrice
{
type zeroGradient;
}
Trailer
{
type zeroGradient;
}
Ruota1
{
type zeroGradient;
}
Ruota2
{
type zeroGradient;
}
Ruota3
{
type zeroGradient;
}
Ruota4
{
type zeroGradient;
}
Ruota5
{
type zeroGradient;
}
Ruota6
{
type zeroGradient;
}
Ruota7
{
type zeroGradient;
}
Ruota8
{
type zeroGradient;
}

}


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


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object omega;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 0 -1 0 0 0 0];

internalField uniform $turbulentOmega;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

#include "include/fixedInlet"

outlet
{
type inletOutlet;
inletValue $internalField;
value $internalField;
}

symmetryPlanepatch
{
type symmetryPlane;
}

lowerWall
{
type omegaWallFunction;
value uniform 0;
}
upperWall
{
type omegaWallFunction;
value uniform 0;
}

frontAndBack
{
type omegaWallFunction;
value uniform 0;
}
Motrice
{
type omegaWallFunction;
value $internalField;
}
Trailer
{
type omegaWallFunction;
value $internalField;
}
Ruota1
{
type omegaWallFunction;
value $internalField;
}
Ruota2
{
type omegaWallFunction;
value $internalField;
}
Ruota3
{
type omegaWallFunction;
value $internalField;
}
Ruota4
{
type omegaWallFunction;
value $internalField;
}
Ruota5
{
type omegaWallFunction;
value $internalField;
}
Ruota6
{
type omegaWallFunction;
value $internalField;
}
Ruota7
{
type omegaWallFunction;
value $internalField;
}
Ruota8
{
type omegaWallFunction;
value $internalField;
}
}


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


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object nut;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 2 -1 0 0 0 0];

internalField uniform 0;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

frontAndBack
{
type nutkWallFunction;
value uniform 0;
}

inlet
{
type calculated;
value uniform 0;
}

symmetryPlanepatch
{
type symmetryPlane;
}

outlet
{
type nutkWallFunction;
value uniform 0;
}

lowerWall
{
type nutkWallFunction;
value uniform 0;
}

upperWall
{
type nutkWallFunction;
value uniform 0;
}


Motrice
{
type nutkWallFunction;
value uniform 0;
}
Trailer
{
type nutkWallFunction;
value uniform 0;
}
Ruota1
{
type nutkWallFunction;
value uniform 0;
}
Ruota2
{
type nutkWallFunction;
value uniform 0;
}
Ruota3
{
type nutkWallFunction;
value uniform 0;
}
Ruota4
{
type nutkWallFunction;
value uniform 0;
}
Ruota5
{
type nutkWallFunction;
value uniform 0;
}
Ruota6
{
type nutkWallFunction;
value uniform 0;
}
Ruota7
{
type nutkWallFunction;
value uniform 0;
}
Ruota8
{
type nutkWallFunction;
value uniform 0;
}
}


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


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object k;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 2 -2 0 0 0 0];

internalField uniform $turbulentKE;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
//- Define inlet conditions
#include "include/fixedInlet"
outlet
{
type inletOutlet;
inletValue $internalField;
value $internalField;
}
symmetryPlanepatch
{
type symmetryPlane;
}
lowerWall
{
type kqRWallFunction;
value uniform 0;
}
upperWall
{
type kqRWallFunction;
value uniform 0;
}

frontAndBack
{
type kqRWallFunction;
value uniform 0;
}
Motrice
{
type kqRWallFunction;
value $internalField;
}
Trailer
{
type kqRWallFunction;
value $internalField;
}
Ruota1
{
type kqRWallFunction;
value $internalField;
}
Ruota2
{
type kqRWallFunction;
value $internalField;
}
Ruota3
{
type kqRWallFunction;
value $internalField;
}
Ruota4
{
type kqRWallFunction;
value $internalField;
}
Ruota5
{
type kqRWallFunction;
value $internalField;
}
Ruota6
{
type kqRWallFunction;
value $internalField;
}
Ruota7
{
type kqRWallFunction;
value $internalField;
}
Ruota8
{
type kqRWallFunction;
value $internalField;
}
}
// ************************************************** *********************** //

[Tobermory]

What is the error? What version of OpenFOAM are you running, and what solver?

[Andre1742]

I used simpleFoam as solver, version is 2306. Anyway, it finally worked. Can you please check if I actually satisfied the fixed walls conditions (wind tunnel walls)? Especially related to nut k and omega? Thank you!!

Here are my updated bc:

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object k;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 2 -2 0 0 0 0];

internalField uniform $turbulentKE;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"
//- Define inlet conditions
#include "include/fixedInlet"
outlet
{
type inletOutlet;
inletValue $internalField;
value $internalField;
}
symmetryPlanepatch
{
type symmetryPlane;
}
lowerWall
{
type kqRWallFunction;
value $internalField;
}
upperWall
{
type kqRWallFunction;
value $internalField;
}

frontAndBack
{
type kqRWallFunction;
value $internalField;
}
Motrice
{
type kqRWallFunction;
value $internalField;
}
Trailer
{
type kqRWallFunction;
value $internalField;
}
Ruota1
{
type kqRWallFunction;
value $internalField;
}
Ruota2
{
type kqRWallFunction;
value $internalField;
}
Ruota3
{
type kqRWallFunction;
value $internalField;
}
Ruota4
{
type kqRWallFunction;
value $internalField;
}
Ruota5
{
type kqRWallFunction;
value $internalField;
}
Ruota6
{
type kqRWallFunction;
value $internalField;
}
Ruota7
{
type kqRWallFunction;
value $internalField;
}
Ruota8
{
type kqRWallFunction;
value $internalField;
}
}
// ************************************************** *********************** //


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object nut;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 2 -1 0 0 0 0];

internalField uniform 0;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

frontAndBack
{
type nutkWallFunction;
value uniform 0;
}

inlet
{
type calculated;
value uniform 0;
}

symmetryPlanepatch
{
type symmetryPlane;
}

outlet
{
type calculated;
value uniform 0;
}

lowerWall
{
type nutkWallFunction;
value uniform 0;
}

upperWall
{
type nutkWallFunction;
value uniform 0;
}


Motrice
{
type nutkWallFunction;
value uniform 0;
}
Trailer
{
type nutkWallFunction;
value uniform 0;
}
Ruota1
{
type nutkWallFunction;
value uniform 0;
}
Ruota2
{
type nutkWallFunction;
value uniform 0;
}
Ruota3
{
type nutkWallFunction;
value uniform 0;
}
Ruota4
{
type nutkWallFunction;
value uniform 0;
}
Ruota5
{
type nutkWallFunction;
value uniform 0;
}
Ruota6
{
type nutkWallFunction;
value uniform 0;
}
Ruota7
{
type nutkWallFunction;
value uniform 0;
}
Ruota8
{
type nutkWallFunction;
value uniform 0;
}
}


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


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object omega;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 0 -1 0 0 0 0];

internalField uniform $turbulentOmega;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

#include "include/fixedInlet"

outlet
{
type inletOutlet;
inletValue $internalField;
value $internalField;
}

symmetryPlanepatch
{
type symmetryPlane;
}

lowerWall
{
type omegaWallFunction;
value $internalField;
}
upperWall
{
type omegaWallFunction;
value $internalField;
}

frontAndBack
{
type omegaWallFunction;
value $internalField;
}


Motrice
{
type omegaWallFunction;
value $internalField;
}
Trailer
{
type omegaWallFunction;
value $internalField;
}
Ruota1
{
type omegaWallFunction;
value $internalField;
}
Ruota2
{
type omegaWallFunction;
value $internalField;
}
Ruota3
{
type omegaWallFunction;
value $internalField;
}
Ruota4
{
type omegaWallFunction;
value $internalField;
}
Ruota5
{
type omegaWallFunction;
value $internalField;
}
Ruota6
{
type omegaWallFunction;
value $internalField;
}
Ruota7
{
type omegaWallFunction;
value $internalField;
}
Ruota8
{
type omegaWallFunction;
value $internalField;
}
}


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

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 2 -2 0 0 0 0];

internalField uniform $pressure;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

inlet
{
type zeroGradient;
}
symmetryPlanepatch
{
type symmetryPlane;
}
outlet
{
type fixedValue;
value $internalField;
}

lowerWall
{
type zeroGradient;
}
upperWall
{
type zeroGradient;
}

frontAndBack
{
type zeroGradient;
}

Motrice
{
type zeroGradient;
}
Trailer
{
type zeroGradient;
}
Ruota1
{
type zeroGradient;
}
Ruota2
{
type zeroGradient;
}
Ruota3
{
type zeroGradient;
}
Ruota4
{
type zeroGradient;
}
Ruota5
{
type zeroGradient;
}
Ruota6
{
type zeroGradient;
}
Ruota7
{
type zeroGradient;
}
Ruota8
{
type zeroGradient;
}

}


// ************************************************** *********************** //
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2306 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volVectorField;
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 1 -1 0 0 0 0];

internalField uniform $flowVelocity;

boundaryField
{
#includeEtc "caseDicts/setConstraintTypes"

#include "include/fixedInlet"

outlet
{
type inletOutlet;
inletValue uniform (0 0 0);
value $internalField;
}

symmetryPlanepatch
{
type symmetryPlane;
}

lowerWall
{
type noSlip;
}
upperWall
{
type noSlip;
}

frontAndBack
{
type noSlip;
}

Motrice
{
type noSlip;
}
Trailer
{
type noSlip;
}
Macchina1
{
type noSlip;
}
Macchina2
{
type noSlip;
}
Macchina3
{
type noSlip;
}
Macchina4
{
type noSlip;
}
Macchina5
{
type noSlip;
}
Macchina6
{
type noSlip;
}
Macchina7
{
type noSlip;
}

Ruota1
{
type noSlip;
}
Ruota5
{
type noSlip;
}
Ruota2
{
type noSlip;
}
Ruota6
{
type noSlip;
}
Ruota3
{
type noSlip;
}
Ruota7
{
type noSlip;
}
Ruota4
{
type noSlip;
}
Ruota8
{
type noSlip;
}

}


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