BUG: volFieldValue FO: parallel/empty output (#1853 #1849)

TUT: volFieldValue FO: adds usage example
TUT: multiply FO: adds usage example

src/functionObjects/field/fieldValues/volFieldValue/volFieldValueTemplates.C

@@ -209,30 +209,26 @@ bool Foam::functionObjects::fieldValues::volFieldValue::writeValues
 
         if (writeFields_)
         {
-            Field<Type> allValues(values);
+            word outName = fieldName + '_' + regionTypeNames_[regionType_];
-            combineFields(allValues);
+            if (this->volRegion::regionName_ != polyMesh::defaultRegion)
-
-            if (Pstream::master())
             {
-                word outName = fieldName + '_' + regionTypeNames_[regionType_];
+                outName = outName + '-' + this->volRegion::regionName_;
-                if (this->volRegion::regionName_ != polyMesh::defaultRegion)
-                {
-                    outName = outName + '-' + this->volRegion::regionName_;
-                }
-
-                IOField<Type>
-                (
-                    IOobject
-                    (
-                        outName,
-                        obr_.time().timeName(),
-                        obr_,
-                        IOobject::NO_READ,
-                        IOobject::NO_WRITE
-                    ),
-                    scaleFactor_*weightField*allValues
-                ).write();
             }
+
+            IOField<Type>
+            (
+                IOobject
+                (
+                    outName,
+                    obr_.time().timeName(),
+                    obr_,
+                    IOobject::NO_READ,
+                    IOobject::NO_WRITE
+                ),
+                weightField.empty()
+              ? scaleFactor_*values
+              : scaleFactor_*weightField*values
+            ).write();
         }
 
         if (operation_ != opNone)

tutorials/incompressible/pisoFoam/RAS/cavity/system/FOmultiply

@@ -0,0 +1,54 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+multiply1_scalar_scalar
+{
+    // Mandatory entries
+    type            multiply;
+    libs            (fieldFunctionObjects);
+    fields          (k k_0);
+
+    // Optional (inherited) entries
+    result          k2;
+    region          region0;
+    enabled         true;
+    log             true;
+    timeStart       0;
+    timeEnd         10;
+    executeControl  timeStep;
+    executeInterval 1;
+    writeControl    runTime;
+    writeInterval   1;
+}
+
+
+multiply1_vector_vector
+{
+    ${multiply1_scalar_scalar}
+    fields          (U U_0);
+    result          U2;
+}
+
+
+multiply1_scalar_vector
+{
+    ${multiply1_scalar_scalar}
+    fields          (k U);
+    result          kU;
+}
+
+
+multiply1_scalar_tensor
+{
+    ${multiply1_scalar_scalar}
+    fields          (k U2);
+    result          kU2;
+}
+
+
+// ************************************************************************* //

tutorials/incompressible/pisoFoam/RAS/cavity/system/FOvolFieldValue

@@ -0,0 +1,162 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+volFieldValue1_none_none
+{
+    // Mandatory entries (unmodifiable)
+    type            volFieldValue;
+    libs            (fieldFunctionObjects);
+
+    // Mandatory entries (runtime modifiable)
+    fields          (p U);
+    operation       none;
+    regionType      all;
+
+    // Optional entries (runtime modifiable)
+    postOperation   none;
+    weightField     none;
+
+    // Optional (inherited) entries
+    writeFields     true;
+    scalingFactor   1.0;
+    writePrecision  8;
+    writeToFile     true;
+    useUserTime     true;
+    region          region0;
+    enabled         true;
+    log             true;
+    timeStart       0;
+    timeEnd         1000;
+    executeControl  timeStep;
+    executeInterval 1;
+    writeControl    writeTime;
+    writeInterval   -1;
+}
+
+
+volFieldValue1_min_none
+{
+    ${volFieldValue1_none_none}
+    operation       min;
+}
+
+
+volFieldValue1_max_none
+{
+    ${volFieldValue1_none_none}
+    operation       max;
+}
+
+
+volFieldValue1_sum_none
+{
+    ${volFieldValue1_none_none}
+    operation       sum;
+}
+
+
+volFieldValue1_sumMag_none
+{
+    ${volFieldValue1_none_none}
+    operation       sumMag;
+}
+
+
+volFieldValue1_average_none
+{
+    ${volFieldValue1_none_none}
+    operation       average;
+}
+
+
+volFieldValue1_volAverage_none
+{
+    ${volFieldValue1_none_none}
+    operation       volAverage;
+}
+
+
+volFieldValue1_volIntegrate_none
+{
+    ${volFieldValue1_none_none}
+    operation       volIntegrate;
+}
+
+
+volFieldValue1_CoV_none
+{
+    ${volFieldValue1_none_none}
+    operation       CoV;
+}
+
+
+volFieldValue1_min_none_cellzone
+{
+    ${volFieldValue1_min_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_max_none_cellzone
+{
+    ${volFieldValue1_max_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_sum_none_cellzone
+{
+    ${volFieldValue1_sum_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_sumMag_none_cellzone
+{
+    ${volFieldValue1_sumMag_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_average_none_cellzone
+{
+    ${volFieldValue1_average_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_volAverage_none_cellzone
+{
+    ${volFieldValue1_volAverage_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_volIntegrate_none_cellzone
+{
+    ${volFieldValue1_volIntegrate_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+volFieldValue1_CoV_none_cellzone
+{
+    ${volFieldValue1_CoV_none}
+    regionType      cellZone;
+    name            zone1;
+}
+
+
+// ************************************************************************* //

tutorials/incompressible/pisoFoam/RAS/cavity/system/controlDict

@@ -67,6 +67,7 @@ functions
     #include "FOlog"
     #include "FOmag"
     #include "FOmagSqr"
+    #include "FOmultiply"
     #include "FOmomentum"
     #include "FOnearWallFields"
     #include "FOPecletNo"
@@ -85,6 +86,7 @@ functions
     #include "FOsurfaceInterpolate"
     #include "FOturbulenceFields"
     #include "FOvalueAverage"
+    #include "FOvolFieldValue"
     #include "FOvorticity"
     #include "FOreference"
     #include "FOwallShearStress"