[Andy Somogyi]

Hey all, trying to output the flow rate though a patch. It works fine from the command line like:

postProcess -func 'flowRatePatch(name=ex)'

However if I put it in the controlDict in functions block like:


functions
{
#includeFunc flowRatePatch(name=ex)
}



I get the error that it can't find the 'phi' field when using the 'postProcess' command:

Reading fields:

Executing functionObjects
surfaceFieldValue flowRatePatch(name=ex) write:
total faces = 806
total area = 0.0008833

--> FOAM Warning :
From Foam::label Foam::functionObjects::fieldValues::surfaceFieldVa lue::writeAll(const vectorField&, const Foam::Field<Type>&, const pointField&, const faceList&) [with WeightType = double; Foam::label = int; Foam::vectorField = Foam::Field<Foam::Vector<double> >; Foam:ointField = Foam::Field<Foam::Vector<double> >; Foam::faceList = Foam::List<Foam::face>]
in file fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C at line 381
Requested field phi not found in database and not processed



How do I fix the controlDict so that postProcess works right?

thanks

[LongGe]

Hi

How about doing the following?

$ <using solver name> -postprocess -func 'flowRatePatch(name=ex)'

For example using simpleFoam
$ simpleFoam -postprocess -func 'flowRatePatch(name=ex)'

[Andy Somogyi]

Originally Posted by LongGe

Hi

How about doing the following?

$ <using solver name> -postprocess -func 'flowRatePatch(name=ex)'

For example using simpleFoam
$ simpleFoam -postprocess -func 'flowRatePatch(name=ex)'

That does work, along with just

"postprocess -func 'flowRatePatch(name=ex)"

But I'd like to add more functions to the controlDict, and I'm trying to figure out why the 'phi' field doesn't seem to be available for controlDict post process functions, when run with the "postProcess" command.

[LongGe]

Hi



The answer can be found here. "6.2.4 Solver post-processing" as https://doc.cfd.direct/openfoam/user...processing-cli