diff --git a/src/postProcessing/functionObjects/utilities/CourantNo/CourantNo.C b/src/postProcessing/functionObjects/field/CourantNo/CourantNo.C
similarity index 96%
rename from src/postProcessing/functionObjects/utilities/CourantNo/CourantNo.C
rename to src/postProcessing/functionObjects/field/CourantNo/CourantNo.C
index ff99c21b4b..40fa5ca004 100644
--- a/src/postProcessing/functionObjects/utilities/CourantNo/CourantNo.C
+++ b/src/postProcessing/functionObjects/field/CourantNo/CourantNo.C
@@ -111,8 +111,8 @@ Foam::functionObjects::CourantNo::~CourantNo()
 
 bool Foam::functionObjects::CourantNo::read(const dictionary& dict)
 {
-    phiName_ = dict.lookupOrDefault<word>("phiName", "phi");
-    rhoName_ = dict.lookupOrDefault<word>("rhoName", "rho");
+    phiName_ = dict.lookupOrDefault<word>("phi", "phi");
+    rhoName_ = dict.lookupOrDefault<word>("rho", "rho");
 
     return true;
 }
diff --git a/src/postProcessing/functionObjects/utilities/CourantNo/CourantNo.H b/src/postProcessing/functionObjects/field/CourantNo/CourantNo.H
similarity index 100%
rename from src/postProcessing/functionObjects/utilities/CourantNo/CourantNo.H
rename to src/postProcessing/functionObjects/field/CourantNo/CourantNo.H
diff --git a/src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.C b/src/postProcessing/functionObjects/field/Lambda2/Lambda2.C
similarity index 98%
rename from src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.C
rename to src/postProcessing/functionObjects/field/Lambda2/Lambda2.C
index 9f47b1fac1..c942606b5a 100644
--- a/src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.C
+++ b/src/postProcessing/functionObjects/field/Lambda2/Lambda2.C
@@ -91,7 +91,7 @@ Foam::functionObjects::Lambda2::~Lambda2()
 
 bool Foam::functionObjects::Lambda2::read(const dictionary& dict)
 {
-    UName_ = dict.lookupOrDefault<word>("UName", "U");
+    UName_ = dict.lookupOrDefault<word>("U", "U");
 
     return true;
 }
diff --git a/src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.H b/src/postProcessing/functionObjects/field/Lambda2/Lambda2.H
similarity index 100%
rename from src/postProcessing/functionObjects/utilities/Lambda2/Lambda2.H
rename to src/postProcessing/functionObjects/field/Lambda2/Lambda2.H
diff --git a/src/postProcessing/functionObjects/field/Make/files b/src/postProcessing/functionObjects/field/Make/files
index a314c43ad0..4d4491351d 100644
--- a/src/postProcessing/functionObjects/field/Make/files
+++ b/src/postProcessing/functionObjects/field/Make/files
@@ -36,5 +36,9 @@ fieldExpression/fieldExpression.C
 div/div.C
 grad/grad.C
 mag/mag.C
+vorticity/vorticity.C
+Q/Q.C
+Lambda2/Lambda2.C
+CourantNo/CourantNo.C
 
 LIB = $(FOAM_LIBBIN)/libfieldFunctionObjects
diff --git a/src/postProcessing/functionObjects/utilities/Q/Q.C b/src/postProcessing/functionObjects/field/Q/Q.C
similarity index 61%
rename from src/postProcessing/functionObjects/utilities/Q/Q.C
rename to src/postProcessing/functionObjects/field/Q/Q.C
index a07925d2b2..52cc9f1489 100644
--- a/src/postProcessing/functionObjects/utilities/Q/Q.C
+++ b/src/postProcessing/functionObjects/field/Q/Q.C
@@ -24,7 +24,6 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "Q.H"
-#include "volFields.H"
 #include "fvcGrad.H"
 #include "addToRunTimeSelectionTable.H"
 
@@ -55,29 +54,8 @@ Foam::functionObjects::Q::Q
     const dictionary& dict
 )
 :
-    fvMeshFunctionObject(name, runTime, dict)
-{
-    read(dict);
-
-    volScalarField* QPtr
-    (
-        new volScalarField
-        (
-            IOobject
-            (
-                type(),
-                mesh_.time().timeName(),
-                mesh_,
-                IOobject::NO_READ,
-                IOobject::NO_WRITE
-            ),
-            mesh_,
-            dimensionedScalar("0", dimless/sqr(dimTime), 0.0)
-        )
-    );
-
-    mesh_.objectRegistry::store(QPtr);
-}
+    fieldExpression(name, runTime, dict, "U", "Q")
+{}
 
 
 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
@@ -88,45 +66,24 @@ Foam::functionObjects::Q::~Q()
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-bool Foam::functionObjects::Q::read(const dictionary& dict)
-{
-    UName_ = dict.lookupOrDefault<word>("UName", "U");
-
-    return true;
-}
-
-
 bool Foam::functionObjects::Q::execute(const bool postProcess)
 {
-    const volVectorField& U =
-        mesh_.lookupObject<volVectorField>(UName_);
+    if (foundField<volVectorField>(fieldName_))
+    {
+        const volVectorField& U = lookupField<volVectorField>(fieldName_);
+        const tmp<volTensorField> tgradU(fvc::grad(U));
+        const volTensorField& gradU = tgradU();
 
-    const volTensorField gradU(fvc::grad(U));
-
-    volScalarField& Q =
-        const_cast<volScalarField&>
+        return store
         (
-            mesh_.lookupObject<volScalarField>(type())
+            resultName_,
+            0.5*(sqr(tr(gradU)) - tr(((gradU) & (gradU))))
         );
-
-    Q = 0.5*(sqr(tr(gradU)) - tr(((gradU) & (gradU))));
-
-    return true;
-}
-
-
-bool Foam::functionObjects::Q::write(const bool postProcess)
-{
-    const volScalarField& Q =
-        mesh_.lookupObject<volScalarField>(type());
-
-    Info<< type() << " " << name() << " output:" << nl
-        << "    writing field " << Q.name() << nl
-        << endl;
-
-    Q.write();
-
-    return true;
+    }
+    else
+    {
+        return false;
+    }
 }
 
 
diff --git a/src/postProcessing/functionObjects/utilities/Q/Q.H b/src/postProcessing/functionObjects/field/Q/Q.H
similarity index 83%
rename from src/postProcessing/functionObjects/utilities/Q/Q.H
rename to src/postProcessing/functionObjects/field/Q/Q.H
index 1b64e08d0d..40f5cd8103 100644
--- a/src/postProcessing/functionObjects/utilities/Q/Q.H
+++ b/src/postProcessing/functionObjects/field/Q/Q.H
@@ -36,6 +36,7 @@ Description
     \f]
 
 SeeAlso
+    Foam::functionObjects::fieldExpression
     Foam::functionObjects::fvMeshFunctionObject
 
 SourceFiles
@@ -46,8 +47,7 @@ SourceFiles
 #ifndef functionObjects_Q_H
 #define functionObjects_Q_H
 
-#include "fvMeshFunctionObject.H"
-#include "volFieldsFwd.H"
+#include "fieldExpression.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -62,22 +62,8 @@ namespace functionObjects
 
 class Q
 :
-    public fvMeshFunctionObject
+    public fieldExpression
 {
-    // Private data
-
-        //- Name of velocity field, default is "U"
-        word UName_;
-
-
-    // Private Member Functions
-
-        //- Disallow default bitwise copy construct
-        Q(const Q&);
-
-        //- Disallow default bitwise assignment
-        void operator=(const Q&);
-
 
 public:
 
@@ -102,14 +88,8 @@ public:
 
     // Member Functions
 
-        //- Read the Q data
-        virtual bool read(const dictionary&);
-
         //- Calculate the Q-field
         virtual bool execute(const bool postProcess = false);
-
-        //- Write the Q-field
-        virtual bool write(const bool postProcess = false);
 };
 
 
diff --git a/src/postProcessing/functionObjects/field/div/div.H b/src/postProcessing/functionObjects/field/div/div.H
index f490a9cac5..1076300b88 100644
--- a/src/postProcessing/functionObjects/field/div/div.H
+++ b/src/postProcessing/functionObjects/field/div/div.H
@@ -33,6 +33,7 @@ Description
     volScalarField.
 
 SeeAlso
+    Foam::functionObjects::fieldExpression
     Foam::functionObjects::fvMeshFunctionObject
 
 SourceFiles
diff --git a/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.C b/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.C
index 205d6a0fd6..35ebf04fb4 100644
--- a/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.C
+++ b/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.C
@@ -42,10 +42,14 @@ Foam::functionObjects::fieldExpression::fieldExpression
 (
     const word& name,
     const Time& runTime,
-    const dictionary& dict
+    const dictionary& dict,
+    const word& fieldName,
+    const word& resultName
 )
 :
-    fvMeshFunctionObject(name, runTime, dict)
+    fvMeshFunctionObject(name, runTime, dict),
+    fieldName_(fieldName),
+    resultName_(resultName)
 {
     read(dict);
 }
@@ -61,7 +65,10 @@ Foam::functionObjects::fieldExpression::~fieldExpression()
 
 bool Foam::functionObjects::fieldExpression::read(const dictionary& dict)
 {
-    dict.lookup("field") >> fieldName_;
+    if (fieldName_ == word::null || dict.found("field"))
+    {
+        dict.lookup("field") >> fieldName_;
+    }
 
     if (dict.found("result"))
     {
diff --git a/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.H b/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.H
index 767dd7ce1b..3b0e645e23 100644
--- a/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.H
+++ b/src/postProcessing/functionObjects/field/fieldExpression/fieldExpression.H
@@ -93,7 +93,9 @@ public:
         (
             const word& name,
             const Time& runTime,
-            const dictionary& dict
+            const dictionary& dict,
+            const word& fieldName = word::null,
+            const word& resultName = word::null
         );
 
 
diff --git a/src/postProcessing/functionObjects/utilities/vorticity/vorticity.C b/src/postProcessing/functionObjects/field/vorticity/vorticity.C
similarity index 98%
rename from src/postProcessing/functionObjects/utilities/vorticity/vorticity.C
rename to src/postProcessing/functionObjects/field/vorticity/vorticity.C
index a9f8f1faa7..fab61b736a 100644
--- a/src/postProcessing/functionObjects/utilities/vorticity/vorticity.C
+++ b/src/postProcessing/functionObjects/field/vorticity/vorticity.C
@@ -91,7 +91,7 @@ Foam::functionObjects::vorticity::~vorticity()
 
 bool Foam::functionObjects::vorticity::read(const dictionary& dict)
 {
-    UName_ = dict.lookupOrDefault<word>("UName", "U");
+    UName_ = dict.lookupOrDefault<word>("U", "U");
     if (UName_ != "U")
     {
         outputName_ = typeName + "(" + UName_ + ")";
diff --git a/src/postProcessing/functionObjects/utilities/vorticity/vorticity.H b/src/postProcessing/functionObjects/field/vorticity/vorticity.H
similarity index 100%
rename from src/postProcessing/functionObjects/utilities/vorticity/vorticity.H
rename to src/postProcessing/functionObjects/field/vorticity/vorticity.H
diff --git a/src/postProcessing/functionObjects/utilities/Make/files b/src/postProcessing/functionObjects/utilities/Make/files
index a911df6bf0..25364ae225 100644
--- a/src/postProcessing/functionObjects/utilities/Make/files
+++ b/src/postProcessing/functionObjects/utilities/Make/files
@@ -1,16 +1,6 @@
 codedFunctionObject/codedFunctionObject.C
-CourantNo/CourantNo.C
-Lambda2/Lambda2.C
-Peclet/Peclet.C
-Q/Q.C
-blendingFactor/blendingFactor.C
-dsmcFields/dsmcFields.C
 residuals/residuals.C
-scalarTransport/scalarTransport.C
 timeActivatedFileUpdate/timeActivatedFileUpdate.C
-turbulenceFields/turbulenceFields.C
-vorticity/vorticity.C
-yPlus/yPlus.C
 setTimeStep/setTimeStepFunctionObject.C
 systemCall/systemCall.C
 abort/abort.C
@@ -18,4 +8,12 @@ removeRegisteredObject/removeRegisteredObject.C
 writeDictionary/writeDictionary.C
 writeRegisteredObject/writeRegisteredObject.C
 
+scalarTransport/scalarTransport.C
+blendingFactor/blendingFactor.C
+dsmcFields/dsmcFields.C
+
+turbulenceFields/turbulenceFields.C
+Peclet/Peclet.C
+yPlus/yPlus.C
+
 LIB = $(FOAM_LIBBIN)/libutilityFunctionObjects
diff --git a/src/postProcessing/functionObjects/utilities/Peclet/Peclet.C b/src/postProcessing/functionObjects/utilities/Peclet/Peclet.C
index a21596e5dc..e84f841287 100644
--- a/src/postProcessing/functionObjects/utilities/Peclet/Peclet.C
+++ b/src/postProcessing/functionObjects/utilities/Peclet/Peclet.C
@@ -94,8 +94,8 @@ Foam::functionObjects::Peclet::~Peclet()
 
 bool Foam::functionObjects::Peclet::read(const dictionary& dict)
 {
-    phiName_ = dict.lookupOrDefault<word>("phiName", "phi");
-    rhoName_ = dict.lookupOrDefault<word>("rhoName", "rho");
+    phiName_ = dict.lookupOrDefault<word>("phi", "phi");
+    rhoName_ = dict.lookupOrDefault<word>("rho", "rho");
 
     return true;
 }