[jmf]

Hi everybody

I try to model a rotor in an open stream, using simpleSRFoam.

The solvers returns :

--> FOAM FATAL ERROR: 
    request for volVectorField U from objectRegistry region0 failed
    available objects of type volVectorField are
1
(
Urel
)
    From function objectRegistry::lookupObject<Type>(const word&) const
    in file /home/nous/OpenFOAM/OpenFOAM-1.7.1/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 139.

In folder /0, there is a file Urel as follow :

internalField   uniform (10 0 0);
boundaryField
{
    inlet           
    {
        type            fixedValue;
        inletValue      uniform (10 0 0);
        relative        no;
        value           uniform (10 0 0);
    }
    outlet          
    {
        type            freestream;
        freestreamValue uniform (10 0 0);
    }
    rotor       
    {
        type            SRFVelocity;
        inletValue      uniform (0 0 0);
        relative        yes;
        value           uniform (0 0 0);
    }
    cyclic
    {
        type            cyclic;
    }
}

In /system, fvSolution contains :

    Urel
    {
        solver          PBiCG;
        preconditioner  DILU;
        tolerance       1e-05;
        relTol          0.1;
    }

I'm sticked. Who might help me ?

Thanks in advance

Jean-Michel

[jmf]

Hello

My problem is solved : freeStream BC seems not to be compatible with simpleSRFFoam.

fixedValue fixed the error

Best wishes

Jean-Michel

[be_inspired]

Hi,

I have problems with SRFsimpleFoam. My mesh is 3D, it is a 120º sector with cyclic condition. Continuity errors are increasing at each iteration.

Could you share some information about bcs? Inlet, outlet, cyclic, wall and exterior fardfield?

Thanks in advance

[WernerW]

Hi,

i'm experiencing the same issue with the request for volVectorField U as JMF. I'm following your advice to change the boundary conditions where there is freestream (with an exterior flow) from SRFFreestream to fixedValue and to zeroGradient and it still doesn't work.

I think that the zeroGradient boundary condition is better since I don't have a wall in here. For the fixedValue BC's I should give the walls the same speed of the air, which must be very difficult.

I think I might have to mention the volVectorField U somewhere since I eventually would want to have such vector field as a result. Are you sure that the solution to this problem relies only in the definitions of the boundary conditions ?

I will attach the versions of the Urel that I have created. I have followed the SFRSimpleFoam/Mixer to set up the fvSolution and fvSchemes. I attach them here as well.

I would apreciate any help.

Regards,
Werner

[ingarcia1703]

Using the solver steadyCOmpressibleSRFFoam still find the error

request for volVectorField U from objectRegistry region0 failed
available objects of type volVectorField are

4
(
UrelPrevIter
Urot
Urel
Uabs
)
...

I already changed the boundary conditions but is not working. Any idea?

Regards

[ingarcia1703]

Hello foamers

The issue appeared because at the inlet boundary condition of temperature did not specify the U field as Urel, therefore the solver did not find the value. THen, by specifying U as U rel the problem has been solved.

Regards