[smhk]

Hello everyone,
I want to find a scalar (T) in a pure convection field which has a known velocity field.

I've tried to use scalarTransportFoam (I'm supposed to solve the field with that solver) but I got this message:

scalarTransportFoam has been superseded and replaced by the more general
functions solver module executed by the foamRun application:

    foamRun -solver functions

The solver specified by either the subSolver or if not present the solver entry
in the controlDict is instantiated to provide the physical fields needed by the
functionObjects.  The scalarTransport functionObject is then instantiated from
the functions entry in the controlDict and executed in a time-loop also
controlled by entries in controlDict and the maxDeltaT() returned by the
sub-solver.  See:

    tutorials/modules/incompressibleFluid/pitzDailyScalarTransport

So I tried to run it with foamRun and I got this one:

 FOAM FATAL ERROR:
cannot find file "/home/smhk/CFD_P/0/p"

    From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::readStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const
    in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 539.

FOAM exiting

but there is no pressure field here so I removed the p file
What may I do? Thanks in advance



(I'm completely new and I'm using Openfoam11)

[Tobermory]

Interesting - in v8, you could get away without specifying a pressure field in the 0 folder, but you can't in v11 - it "needs" the p file to be present, but then presumably ignores it thereafter.

Solution: make sure you have a "dummy" p file in the 0 folder; I don't think that the values matter, so just put zero for the internal field and mirror the boundaries in your T file, eg:

boundaryField
{
    inlet
    {
        type            zeroGradient;
    }
    outlet
    {
        type            fixedValue;
        value           uniform 0;
    }
    upperWall
    {
        type            zeroGradient;
    }
    lowerWall
    {
        type            zeroGradient;
    }
    frontAndBack
    {
        type            empty;
    }
}

It should then run.

PS this may be worth entering a bug report ...

[smhk]

Originally Posted by Tobermory

Interesting - in v8, you could get away without specifying a pressure field in the 0 folder, but you can't in v11 - it "needs" the p file to be present, but then presumably ignores it thereafter.

Solution: make sure you have a "dummy" p file in the 0 folder; I don't think that the values matter, so just put zero for the internal field and mirror the boundaries in your T file,

It should then run.

PS this may be worth entering a bug report ...

Thank you.


But this is also happening for other files is 0 directory:

--> FOAM FATAL ERROR:
cannot find file "/home/smhk/CFD_P/0/k"

    From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::readStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const
     in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 539.

Maybe it's a problem from other parts such as controlDict or something?
CFD_P.zip


P.S. My classmate have done it in openfoam 6 by scalarTransportFoam.

[Tobermory]

Yes - it looks like it is trying to load all the components of the baseline solver before just carrying on with the scalar transport part, so i presume you'll have to have dummy versions of all of the files in the 0 folder. Or just use an earlier version of OpenFOAM - v8 works finr, as does v6 as you noted. Good luck.