[Osman]

Hi,

I am trying to do the 3d tube FSI simulation in foam-extend version 4.0. But, the following problem is arising

--> FOAM FATAL ERROR:
flux requested but p not specified in the fluxRequired sub-dictionary of fvSchemes.

From function fvMatrix<Type>::flux()
in file lnInclude/fvMatrix.C at line 1046.

FOAM aborting

Aborted (core dumped)

Can someone say, why this is happening? In the fvSchemes of the tutorial, the following is written:

fluxRequired
{
default no;
p;
}

Thanks!!

[vvukcevic]

Hi Osman,


The probable cause for this is that the fluxRequired subdictionary in fvSchemes is deprecated and the setting of fluxRequired flag for each field now happens in the top level solver. I assume that the code is not updated for this particular top level solver.


If you don't want to wait for the fix, you can do it yourself by going into createFields.H of the solver, adding this line (usually after setRefCell) and recompiling:

mesh.schemesDict().setFluxRequired(p.name());

Also, could you please let me know the exact name of the tutorial so I can fix it?


Hope it helps,


Vuko.

[Osman]

Hi Vuko,

Thanks for your reply. I am new to openfoam environment. Can you please tell me where "createFields.H" is located? I am talking about fsiFoam and 3dtube tutorial under this solver.

Thanks,

Osman

[vvukcevic]

Hi again,


Unfortunately I can't seem to find fsiFoam solver in foam-extend-4.0.. Are you sure that the name of the solver is just fsiFoam?


If you can find a path of the top level solver, you can find the createFields.H there which needs to be changed.


Yours,


Vuko.

[sangeet]

Hey,

I faced the same problem at the beginning, go this post and read #18

https://www.cfd-online.com/Forums/sh...d.php?p=672445