CFD Online Discussion Forums - [PyFoam] Using snappyHexMesh -overwrite with BasicRunner

Hello,

I am trying to automate a mesh convergence study using PyFoam to vary the refinement levels of my mesh.

I haven't found a way to use the -overwrite option for snappyHexMesh with BasicRunner, leaving me unable to run a solver.

Here is my BasicRunner code:

Code:

# decompose case for parallel run

Decomposer(args=["--progress", "--method=simple",

            "--n=3,2,1", "--delta=1e-4", "--decomposer=decomposePar -copyZero", case.name, 6]

)

machine = LAMMachine(nr=6)

# run snappy

runSnappy = BasicRunner(

    argv=["snappyHexMesh", "-case", case.name], silent=True, parameters="overwrite", logname="snappyHexMesh", lam=machine

)

runSnappy.start()

And here is the fatal error that is returned:

Code:

Create time



Create mesh for time = 3



 Reading field p



[3] --> FOAM FATAL ERROR:

[3] cannot find file "/home/daveygravy/scripting/OpenFOAM/dragOverSphereSnappy/flowAroundSphereSnappy-nu100/processor3/3/p"

[3]

[3]     From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::readStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const

[3]     in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 539.

[3]

FOAM parallel run exiting

If I can use snappyHexMesh -overwrite, then Create mesh for time = 3 will change to Create mesh for time = 0, and my run can progress.

I've taken a look at the source code, though I don't see a straightforward way to implement -overwrite.

Any help is appreciated, thanks!