[donQi]

Hello,

in OpenFOAM2.4 to compute that mass flowrate at an arbitrary faceZone inside the fluid domain I used the METHOD reported below. Unfortunately if I use it in OpenFOAM4 I get error:

[11] Unknown function type faceSource

Valid functions are : 

6
(
patchProbes
probes
psiReactionThermoMoleFractions
rhoReactionThermoMoleFractions
sets
surfaces
)

I would like to know what syntax do you use in newer OF versions. Thanks

METHOD used in OF2.4
1) use topoSet to extract the faceZone where you want to compute the massflow. The topoSetDict will as follows:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.2.1                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      topoSetDict;
}

// * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * //

actions
(
    {
        // Name of set to operate on
        name    extractedFaces;  // to create the faceZone required by the effectiveness module in fvOptions
        type    faceSet;
        // One of clear/new/invert/add/delete|subset/list
        action  new;
        source  boxToFace;
        sourceInfo
        {  
            // thin box to extract the faceZone where you want to investigate the massflow
            box (0.148 -0.265 -0.265) (0.151 0.265 0.265);  
        }
    }
   
   
    // creation of the faceZone (from the above faceSet)
    {
        name    massFlowSurface;
        type    faceZoneSet;
        action  new;
        source  setAndNormalToFaceZone;
        sourceInfo
        {
            faceSet extractedFaces;
            normal (1    0    0);
        }
    }
 );

2) add in controlDict

functions
{
    #include        "ProbeData"
  
// massFlow computation 
    massFlow
    {
        type            faceSource;

        enabled         true;
        outputControl   timeStep;
        outputInterval  1;

        // Output to log&file (true) or to file only
        log             true;

        // Output field values as well
        valueOutput     false;

        // Type of source: patch/faceZone/sampledSurface
        source          faceZone;

        // if patch or faceZone: name of patch or faceZone
        sourceName      massFlowSurface;

        // Operation: areaAverage/sum/weightedAverage ...
        operation       sum;

        surfaceFormat   vtk;

        fields
        (
            phi
        );
    }  
  
}

3) launch the solver

[donQi]

I have found the solution to my error here
http://www.openfoam.com/documentatio...2.html#details

I was forgetting the line

functionObjectLibs ("libfieldFunctionObjects.so");

inside the massFlow block. By setting:

functions
{
    //#include        "ProbeData"
  
// massFlow computation 
    massFlow
    {
        type            faceSource;
        functionObjectLibs ("libfieldFunctionObjects.so");
        enabled         true;
        outputControl   timeStep;
        outputInterval  1;

        // Output to log&file (true) or to file only
        log             true;

        // Output field values as well
        valueOutput     false;

        // Type of source: patch/faceZone/sampledSurface
        source          faceZone;

        // if patch or faceZone: name of patch or faceZone
        sourceName      massFlowSurface;

        // Operation: areaAverage/sum/weightedAverage ...
        operation       sum;

        surfaceFormat   vtk;

        fields
        (
            phi
        );
    }  
  
}

I get correctly the massflow at the faceZone:

faceSource massFlow output:
    sum(massFlowSurface) of phi = 0.6364095