[zulfadli555]

Hi guys,

this is my first post here! Anyways I am trying to set up a case where the inlet is a log profile using the function: atmBoundaryLayerInletVelocity

here is my U:

FoamFile
{
version 2.0;
format ascii;
class volVectorField;
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

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

internalField uniform (1 0 0);

boundaryField
{
x_
{
type atmBoundaryLayerInletVelocity;
Uref 5.0;
Href 0.12;
z (0 0 1);
n (1 0 0);
z0 uniform 0.01;
zGround uniform 0.0;
value $internalField;
}

_x
{
type zeroGradient;
}

y_
{
type slip;

}
_y
{
type slip;
}

_z
{
type slip;
}

building_medb15
{
type fixedValue;
value uniform (0 0 0);
}

ground_wall
{
type fixedValue;
value uniform (0 0 0);
}

"proc.*"
{
type processor;
}

".*"
{
type fixedValue;
value uniform (0 0 0);
}
}

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

Using "uniform" i get the error:
wrong token type - expected Scalar, found on line 30 the word 'uniform'
Using "constant" i get the same error:
wrong token type - expected Scalar, found on line 30 the word 'constant'

While just typing:

x_
{
type atmBoundaryLayerInletVelocity;
Uref 5.0;
Href 0.12;
z (0 0 1);
n (1 0 0);
z0 0.01;
zGround 0.0;
value $internalField;
}
I get the error:

--> FOAM Warning :
From function Field<Type>::Field(const word& keyword, const dictionary&, const label)
in file /home/zbbong/build/OpenFOAM/OpenFOAM-2.1.0/src/OpenFOAM/lnInclude/Field.C at line 262
Reading "/gpfs/home/zulfadli001/15b5-grid3TestABLinlet/0/U::boundaryField::x_" from line 25 to line 31
expected keyword 'uniform' or 'nonuniform', assuming deprecated Field format from Foam version 2.0.
Reading/calculating face flux field phi

I manage to get it running with this but pimpleFoam tends to diverge and whatever data I've compiled so far, there is no such indication of any inlet velocity.





Also, can somebody tell me if I need to indicate "value"? I had added it in after getting another foam error while decomposePar:
--> FOAM FATAL IO ERROR:

Cannot find 'value' entry on patch x_ of field U in file "/gpfs/home/zulfadli001/15b5-grid3TestABLinlet/0/U"
which is required to set the values of the generic patch field.
(Actual type atmBoundaryLayerInletVelocity)

Please add the 'value' entry to the write function of the user-defined boundary-condition


file: /gpfs/home/zulfadli001/15b5-grid3TestABLinlet/0/U::boundaryField::x_ from line 25 to line 31.





I can't just copy the turbine siting files from the tutorial as I am running the case on the school server and it uses version 2.1.0.

Any help would be appreciated.

Cheers

[gonpe]

You are missing a semi colon when specifying the x_ boundary condition.

x_
{
type atmBoundaryLayerInletVelocity;
Uref 5.0;
Href 0.12;
z (0 0 1);
n (1 0 0);
z0 uniform 0.01;
zGround uniform 0.0;
value $internalField
}


Should read

x_
{
type atmBoundaryLayerInletVelocity;
Uref 5.0;
Href 0.12;
z (0 0 1);
n (1 0 0);
z0 uniform 0.01;
zGround uniform 0.0;
value $internalField;
}

[zulfadli555]

Hi gonpe,

thanks for pointing it out. I have double checked, I prolly hit a backspace when i copied it over. I am still facing the same errors.

Appreciate if anyone can provide some advice!

[gonpe]

Using "uniform" i get the error:
wrong token type - expected Scalar, found on line 30 the word 'uniform'
Using "constant" i get the same error:
wrong token type - expected Scalar, found on line 30 the word 'constant'

The input files changed between versions 2.0 and later versions (maybe 2.1 ... not sure). There was probably a change in how the z0 and zGround was specified between the 2 solvers.

I am a bit confused ... you mention that the case runs but diverges at one point in your post but then say that it doesn't decompose properly.

If you can't decompose a case, odds are you wouldn't be able to run it.

[zulfadli555]

Hi gonpe,

Thank you for your reply and sorry for the confusion.

Im able to run it if i have:
"x_
{
type atmBoundaryLayerInletVelocity;
Uref 5.0;
Href 0.12;
z (0 0 1);
n (1 0 0);
z0 0.01;
zGround 0.0;
value $internalField;
}

But yeah I get the error:

"--> FOAM Warning :
From function Field<Type>::Field(const word& keyword, const dictionary&, const label)
in file /home/zbbong/build/OpenFOAM/OpenFOAM-2.1.0/src/OpenFOAM/lnInclude/Field.C at line 262
Reading "/gpfs/home/zulfadli001/15b5-grid3TestABLinlet/0/U::boundaryField::x_" from line 25 to line 31
expected keyword 'uniform' or 'nonuniform', assuming deprecated Field format from Foam version 2.0.
Reading/calculating face flux field phi"

I'm running LES with pimpleFoam and the deltaT keeps getting smaller be it i assign 100 or 200 iterations. And after reconstructing and foamToVTK whatever data I have, viewing in paraview reveals no other velocity but the internalField with velocity of 1

:/

Thanks!

[gonpe]

Hi

The message is not really an error but a warning. Since you are running OF2.1 , it expects:

x_
{
type atmBoundaryLayerInletVelocity;
Uref 5.0;
Href 0.12;
z (0 0 1);
n (1 0 0);
z0 uniform 0.01;
zGround uniform 0.0;
value $internalField;
}

but it assumes you were trying to set a uniform value to those parameters.

In terms of the run .. .are you able to run it with a RANS solver? Steady state?