[quarkz]

Hi,

I've got a flow past flat plate problem using simpleFoam.

After the simulation, I tried to obtain the grad(U) at wall.

I run:

postProcess -func "grad(U)" -latestTime

But I got the error:

Reading fields:
    volVectorField: U

Executing functionObjects
--> FOAM Warning :
    From bool Foam::regIOobject::store()
    in file /home/user/OpenFOAM/OpenFOAM-v2206/src/OpenFOAM/lnInclude/regIOobjectI.H at line 51
    Refuse to store unregistered object: grad(U)


--> FOAM FATAL ERROR: (openfoam-2206)
Failed to store pointer: grad(U). Risk of memory leakage


    From static Type& Foam::regIOobject::store(Type*) [with Type = Foam::GeometricField<Foam::Tensor<float>, Foam::fvPatchField, Foam::volMesh>]
    in file /home/user/OpenFOAM/OpenFOAM-v2206/src/OpenFOAM/lnInclude/regIOobjectI.H at line 73.

FOAM aborting

#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::error::simpleExit(int, bool) at ??:?
#2  Foam::error::exiting(int, bool) at ??:?
#3  bool Foam::functionObjects::regionFunctionObject::store<Foam::GeometricField<Foam::Tensor<float>, Foam::fvPatchField, Foam::volMesh> >(Foam::word&, Foam::tmp<Foam::GeometricField<Foam::Tensor<float>, Foam::fvPatchField, Foam::volMesh> > const&, bool) at ??:?
#4  bool Foam::functionObjects::grad::calcGrad<Foam::Vector<float> >() at ??:?
#5  Foam::functionObjects::fieldExpression::execute() at ??:?
#6  Foam::functionObjects::timeControl::execute() at ??:?
#7  Foam::functionObjectList::execute() at ??:?
#8  ? in ~/OpenFOAM/OpenFOAM-v2206/platforms/linux64Gcc940SPDPInt32Opt/bin/postProcess
#9  ? in ~/OpenFOAM/OpenFOAM-v2206/platforms/linux64Gcc940SPDPInt32Opt/bin/postProcess
#10  __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
#11  ? in ~/OpenFOAM/OpenFOAM-v2206/platforms/linux64Gcc940SPDPInt32Opt/bin/postProcess
Aborted

May I know what's the problem? I managed to get the wall shear stress though.

Hope someone can help. Thanks!

[shiyu]

Hi Quarkz, I am wondering if you have fixed this issue:

Failed to store pointer: XXX. Risk of memory leakage

I am currently facing exactly the same one, thanks.

[quarkz]

Hi Shiyu, I tried on some other problems and it worked. Hence, I'm not sure why too.