diff --git a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/Make/files b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/Make/files
index 4b72b7ff33..839b339b15 100644
--- a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/Make/files
+++ b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/Make/files
@@ -1,5 +1,5 @@
-moments/moments.C
-sizeDistribution/sizeDistribution.C
+populationBalanceMoments/populationBalanceMoments.C
+populationBalanceSizeDistribution/populationBalanceSizeDistribution.C
 phaseForces/phaseForces.C
 phaseMap/phaseMap.C
 
diff --git a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/moments/moments.C b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceMoments/populationBalanceMoments.C
similarity index 91%
rename from applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/moments/moments.C
rename to applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceMoments/populationBalanceMoments.C
index 9c36cefa37..e9125285da 100644
--- a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/moments/moments.C
+++ b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceMoments/populationBalanceMoments.C
@@ -23,7 +23,7 @@ License
 
 \*---------------------------------------------------------------------------*/
 
-#include "moments.H"
+#include "populationBalanceMoments.H"
 #include "addToRunTimeSelectionTable.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
@@ -32,8 +32,13 @@ namespace Foam
 {
 namespace functionObjects
 {
-    defineTypeNameAndDebug(moments, 0);
-    addToRunTimeSelectionTable(functionObject, moments, dictionary);
+    defineTypeNameAndDebug(populationBalanceMoments, 0);
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        populationBalanceMoments,
+        dictionary
+    );
 }
 }
 
@@ -43,7 +48,7 @@ namespace Foam
     template<>
     const char* NamedEnum
     <
-        Foam::functionObjects::moments::momentType,
+        Foam::functionObjects::populationBalanceMoments::momentType,
         4
     >::names[] = {"integerMoment", "mean", "variance", "stdDev"};
 }
@@ -51,10 +56,10 @@ namespace Foam
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::moments::momentType,
+    Foam::functionObjects::populationBalanceMoments::momentType,
     4
 >
-Foam::functionObjects::moments::momentTypeNames_;
+Foam::functionObjects::populationBalanceMoments::momentTypeNames_;
 
 
 namespace Foam
@@ -62,7 +67,7 @@ namespace Foam
     template<>
     const char* NamedEnum
     <
-        Foam::functionObjects::moments::coordinateType,
+        Foam::functionObjects::populationBalanceMoments::coordinateType,
         3
     >::names[] = {"volume", "area", "diameter"};
 }
@@ -70,10 +75,10 @@ namespace Foam
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::moments::coordinateType,
+    Foam::functionObjects::populationBalanceMoments::coordinateType,
     3
 >
-Foam::functionObjects::moments::coordinateTypeNames_;
+Foam::functionObjects::populationBalanceMoments::coordinateTypeNames_;
 
 
 namespace Foam
@@ -81,7 +86,7 @@ namespace Foam
     template<>
     const char* NamedEnum
     <
-        Foam::functionObjects::moments::weightType,
+        Foam::functionObjects::populationBalanceMoments::weightType,
         3
     >::names[] =
     {
@@ -94,10 +99,10 @@ namespace Foam
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::moments::weightType,
+    Foam::functionObjects::populationBalanceMoments::weightType,
     3
 >
-Foam::functionObjects::moments::weightTypeNames_;
+Foam::functionObjects::populationBalanceMoments::weightTypeNames_;
 
 
 namespace Foam
@@ -105,7 +110,7 @@ namespace Foam
     template<>
     const char* NamedEnum
     <
-        Foam::functionObjects::moments::meanType,
+        Foam::functionObjects::populationBalanceMoments::meanType,
         3
     >::names[] = {"arithmetic", "geometric", "notApplicable"};
 }
@@ -113,15 +118,16 @@ namespace Foam
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::moments::meanType,
+    Foam::functionObjects::populationBalanceMoments::meanType,
     3
 >
-Foam::functionObjects::moments::meanTypeNames_;
+Foam::functionObjects::populationBalanceMoments::meanTypeNames_;
 
 
 // * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
 
-Foam::word Foam::functionObjects::moments::coordinateTypeSymbolicName()
+Foam::word
+Foam::functionObjects::populationBalanceMoments::coordinateTypeSymbolicName()
 {
     word coordinateTypeSymbolicName(word::null);
 
@@ -151,7 +157,8 @@ Foam::word Foam::functionObjects::moments::coordinateTypeSymbolicName()
 }
 
 
-Foam::word Foam::functionObjects::moments::weightTypeSymbolicName()
+Foam::word
+Foam::functionObjects::populationBalanceMoments::weightTypeSymbolicName()
 {
     word weightTypeSymbolicName(word::null);
 
@@ -181,7 +188,7 @@ Foam::word Foam::functionObjects::moments::weightTypeSymbolicName()
 }
 
 
-Foam::word Foam::functionObjects::moments::defaultFldName()
+Foam::word Foam::functionObjects::populationBalanceMoments::defaultFldName()
 {
     word meanName
     (
@@ -209,7 +216,8 @@ Foam::word Foam::functionObjects::moments::defaultFldName()
 }
 
 
-Foam::word Foam::functionObjects::moments::integerMomentFldName()
+Foam::word
+Foam::functionObjects::populationBalanceMoments::integerMomentFldName()
 {
     return
         word
@@ -229,7 +237,7 @@ Foam::word Foam::functionObjects::moments::integerMomentFldName()
 }
 
 
-void Foam::functionObjects::moments::setDimensions
+void Foam::functionObjects::populationBalanceMoments::setDimensions
 (
     volScalarField& fld,
     momentType momType
@@ -385,7 +393,7 @@ void Foam::functionObjects::moments::setDimensions
 
 
 Foam::tmp<Foam::volScalarField>
-Foam::functionObjects::moments::totalConcentration()
+Foam::functionObjects::populationBalanceMoments::totalConcentration()
 {
     tmp<volScalarField> tTotalConcentration
     (
@@ -456,7 +464,8 @@ Foam::functionObjects::moments::totalConcentration()
 }
 
 
-Foam::tmp<Foam::volScalarField> Foam::functionObjects::moments::mean()
+Foam::tmp<Foam::volScalarField>
+Foam::functionObjects::populationBalanceMoments::mean()
 {
     tmp<volScalarField> tMean
     (
@@ -582,7 +591,8 @@ Foam::tmp<Foam::volScalarField> Foam::functionObjects::moments::mean()
 }
 
 
-Foam::tmp<Foam::volScalarField> Foam::functionObjects::moments::variance()
+Foam::tmp<Foam::volScalarField>
+Foam::functionObjects::populationBalanceMoments::variance()
 {
     tmp<volScalarField> tVariance
     (
@@ -699,7 +709,7 @@ Foam::tmp<Foam::volScalarField> Foam::functionObjects::moments::variance()
 
 
 Foam::tmp<Foam::volScalarField>
-Foam::functionObjects::moments::stdDev()
+Foam::functionObjects::populationBalanceMoments::stdDev()
 {
     switch (meanType_)
     {
@@ -717,7 +727,7 @@ Foam::functionObjects::moments::stdDev()
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
-Foam::functionObjects::moments::moments
+Foam::functionObjects::populationBalanceMoments::populationBalanceMoments
 (
     const word& name,
     const Time& runTime,
@@ -750,13 +760,14 @@ Foam::functionObjects::moments::moments
 
 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
-Foam::functionObjects::moments::~moments()
+Foam::functionObjects::populationBalanceMoments::~populationBalanceMoments()
 {}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-bool Foam::functionObjects::moments::read(const dictionary& dict)
+bool
+Foam::functionObjects::populationBalanceMoments::read(const dictionary& dict)
 {
     fvMeshFunctionObject::read(dict);
 
@@ -872,7 +883,7 @@ bool Foam::functionObjects::moments::read(const dictionary& dict)
 }
 
 
-bool Foam::functionObjects::moments::execute()
+bool Foam::functionObjects::populationBalanceMoments::execute()
 {
     switch (momentType_)
     {
@@ -961,7 +972,7 @@ bool Foam::functionObjects::moments::execute()
 }
 
 
-bool Foam::functionObjects::moments::write()
+bool Foam::functionObjects::populationBalanceMoments::write()
 {
     writeObject(fldPtr_->name());
 
diff --git a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/moments/moments.H b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceMoments/populationBalanceMoments.H
similarity index 91%
rename from applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/moments/moments.H
rename to applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceMoments/populationBalanceMoments.H
index 365bd6abea..858b1f0074 100644
--- a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/moments/moments.H
+++ b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceMoments/populationBalanceMoments.H
@@ -22,7 +22,7 @@ License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
 Class
-    Foam::functionObjects::moments
+    Foam::functionObjects::populationBalanceMoments
 
 Description
     Calculates and writes out integral (integer moments) or mean properties
@@ -34,9 +34,9 @@ Description
     the phase fraction of the particulate phase:
 
     \verbatim
-    moments
+    populationBalanceMoments
     {
-        type                moments;
+        type                populationBalanceMoments;
         libs                ("libmultiphaseEulerFoamFunctionObjects.so");
         executeControl      timeStep;
         writeControl        writeTime;
@@ -68,12 +68,12 @@ See also
     Foam::functionObject
 
 SourceFiles
-    moments.C
+    populationBalanceMoments.C
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef functionObjects_moments_H
-#define functionObjects_moments_H
+#ifndef functionObjects_populationBalanceMoments_H
+#define functionObjects_populationBalanceMoments_H
 
 #include "fvMeshFunctionObject.H"
 #include "populationBalanceModel.H"
@@ -86,10 +86,10 @@ namespace functionObjects
 {
 
 /*---------------------------------------------------------------------------*\
-                           Class moments Declaration
+                  Class populationBalanceMoments Declaration
 \*---------------------------------------------------------------------------*/
 
-class moments
+class populationBalanceMoments
 :
     public fvMeshFunctionObject
 {
@@ -200,13 +200,13 @@ private:
 public:
 
     //- Runtime type information
-    TypeName("moments");
+    TypeName("populationBalanceMoments");
 
 
     // Constructors
 
         //- Construct from Time and dictionary
-        moments
+        populationBalanceMoments
         (
             const word& name,
             const Time& runTime,
@@ -214,11 +214,11 @@ public:
         );
 
         //- Disallow default bitwise copy construction
-        moments(const moments&) = delete;
+        populationBalanceMoments(const populationBalanceMoments&) = delete;
 
 
     //- Destructor
-    virtual ~moments();
+    virtual ~populationBalanceMoments();
 
 
     // Member Functions
@@ -242,7 +242,7 @@ public:
     // Member Operators
 
         //- Disallow default bitwise assignment
-        void operator=(const moments&) = delete;
+        void operator=(const populationBalanceMoments&) = delete;
 };
 
 
diff --git a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/sizeDistribution/sizeDistribution.C b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceSizeDistribution/populationBalanceSizeDistribution.C
similarity index 88%
rename from applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/sizeDistribution/sizeDistribution.C
rename to applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceSizeDistribution/populationBalanceSizeDistribution.C
index 9649c4d143..c95a7fe5b6 100644
--- a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/sizeDistribution/sizeDistribution.C
+++ b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceSizeDistribution/populationBalanceSizeDistribution.C
@@ -23,7 +23,7 @@ License
 
 \*---------------------------------------------------------------------------*/
 
-#include "sizeDistribution.H"
+#include "populationBalanceSizeDistribution.H"
 #include "addToRunTimeSelectionTable.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
@@ -32,8 +32,13 @@ namespace Foam
 {
 namespace functionObjects
 {
-    defineTypeNameAndDebug(sizeDistribution, 0);
-    addToRunTimeSelectionTable(functionObject, sizeDistribution, dictionary);
+    defineTypeNameAndDebug(populationBalanceSizeDistribution, 0);
+    addToRunTimeSelectionTable
+    (
+        functionObject,
+        populationBalanceSizeDistribution,
+        dictionary
+    );
 }
 }
 
@@ -41,7 +46,7 @@ template<>
 const char*
 Foam::NamedEnum
 <
-    Foam::functionObjects::sizeDistribution::functionType,
+    Foam::functionObjects::populationBalanceSizeDistribution::functionType,
     6
 >::names[] =
 {
@@ -55,15 +60,15 @@ Foam::NamedEnum
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::sizeDistribution::functionType,
+    Foam::functionObjects::populationBalanceSizeDistribution::functionType,
     6
-> Foam::functionObjects::sizeDistribution::functionTypeNames_;
+> Foam::functionObjects::populationBalanceSizeDistribution::functionTypeNames_;
 
 template<>
 const char*
 Foam::NamedEnum
 <
-    Foam::functionObjects::sizeDistribution::coordinateType,
+    Foam::functionObjects::populationBalanceSizeDistribution::coordinateType,
     4
 >::names[] =
 {
@@ -75,9 +80,10 @@ Foam::NamedEnum
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::sizeDistribution::coordinateType,
+    Foam::functionObjects::populationBalanceSizeDistribution::coordinateType,
     4
-> Foam::functionObjects::sizeDistribution::coordinateTypeNames_;
+> Foam::functionObjects::populationBalanceSizeDistribution::
+  coordinateTypeNames_;
 
 
 namespace Foam
@@ -85,7 +91,7 @@ namespace Foam
     template<>
     const char* NamedEnum
     <
-        Foam::functionObjects::sizeDistribution::weightType,
+        Foam::functionObjects::populationBalanceSizeDistribution::weightType,
         4
     >::names[] =
     {
@@ -99,17 +105,19 @@ namespace Foam
 
 const Foam::NamedEnum
 <
-    Foam::functionObjects::sizeDistribution::weightType,
+    Foam::functionObjects::populationBalanceSizeDistribution::weightType,
     4
 >
-Foam::functionObjects::sizeDistribution::weightTypeNames_;
+Foam::functionObjects::populationBalanceSizeDistribution::weightTypeNames_;
 
 using Foam::constant::mathematical::pi;
 
 
 // * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
 
-Foam::word Foam::functionObjects::sizeDistribution::functionTypeSymbolicName()
+Foam::word
+Foam::functionObjects::populationBalanceSizeDistribution::
+functionTypeSymbolicName()
 {
     word functionTypeSymbolicName(word::null);
 
@@ -157,7 +165,9 @@ Foam::word Foam::functionObjects::sizeDistribution::functionTypeSymbolicName()
 }
 
 
-Foam::word Foam::functionObjects::sizeDistribution::coordinateTypeSymbolicName
+Foam::word
+Foam::functionObjects::populationBalanceSizeDistribution::
+coordinateTypeSymbolicName
 (
     const coordinateType& cType
 )
@@ -197,7 +207,7 @@ Foam::word Foam::functionObjects::sizeDistribution::coordinateTypeSymbolicName
 
 
 Foam::tmp<Foam::scalarField>
-Foam::functionObjects::sizeDistribution::filterField
+Foam::functionObjects::populationBalanceSizeDistribution::filterField
 (
     const scalarField& field
 ) const
@@ -213,7 +223,8 @@ Foam::functionObjects::sizeDistribution::filterField
 }
 
 
-Foam::scalar Foam::functionObjects::sizeDistribution::averageCoordinateValue
+Foam::scalar
+Foam::functionObjects::populationBalanceSizeDistribution::averageCoordinateValue
 (
     const Foam::diameterModels::sizeGroup& fi,
     const coordinateType& cType
@@ -256,7 +267,8 @@ Foam::scalar Foam::functionObjects::sizeDistribution::averageCoordinateValue
 }
 
 
-Foam::scalar Foam::functionObjects::sizeDistribution::weightedAverage
+Foam::scalar
+Foam::functionObjects::populationBalanceSizeDistribution::weightedAverage
 (
     const Foam::scalarField& fld,
     const Foam::diameterModels::sizeGroup& fi
@@ -332,7 +344,8 @@ Foam::scalar Foam::functionObjects::sizeDistribution::weightedAverage
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
-Foam::functionObjects::sizeDistribution::sizeDistribution
+Foam::functionObjects::populationBalanceSizeDistribution::
+populationBalanceSizeDistribution
 (
     const word& name,
     const Time& runTime,
@@ -379,13 +392,17 @@ Foam::functionObjects::sizeDistribution::sizeDistribution
 
 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
-Foam::functionObjects::sizeDistribution::~sizeDistribution()
+Foam::functionObjects::populationBalanceSizeDistribution::
+~populationBalanceSizeDistribution()
 {}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-bool Foam::functionObjects::sizeDistribution::read(const dictionary& dict)
+bool Foam::functionObjects::populationBalanceSizeDistribution::read
+(
+    const dictionary& dict
+)
 {
     Log << type() << " " << name() << ":" << nl;
 
@@ -397,13 +414,13 @@ bool Foam::functionObjects::sizeDistribution::read(const dictionary& dict)
 }
 
 
-bool Foam::functionObjects::sizeDistribution::execute()
+bool Foam::functionObjects::populationBalanceSizeDistribution::execute()
 {
     return true;
 }
 
 
-bool Foam::functionObjects::sizeDistribution::write()
+bool Foam::functionObjects::populationBalanceSizeDistribution::write()
 {
     Log << type() << " " << name() << " write:" << nl;
 
diff --git a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/sizeDistribution/sizeDistribution.H b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceSizeDistribution/populationBalanceSizeDistribution.H
similarity index 90%
rename from applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/sizeDistribution/sizeDistribution.H
rename to applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceSizeDistribution/populationBalanceSizeDistribution.H
index b5c0508fd6..d9b8832b03 100644
--- a/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/sizeDistribution/sizeDistribution.H
+++ b/applications/solvers/multiphase/multiphaseEulerFoam/functionObjects/populationBalanceSizeDistribution/populationBalanceSizeDistribution.H
@@ -22,7 +22,7 @@ License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
 Class
-    Foam::functionObjects::sizeDistribution
+    Foam::functionObjects::populationBalanceSizeDistribution
 
 Description
     Writes out the size distribution determined by a population balance model,
@@ -36,7 +36,7 @@ Description
     \verbatim
     numberDensity
     {
-        type                sizeDistribution;
+        type                populationBalanceSizeDistribution;
         libs                ("libmultiphaseEulerFoamFunctionObjects.so");
         writeControl        writeTime;
         populationBalance   bubbles;
@@ -71,12 +71,12 @@ See also
     Foam::functionObject
 
 SourceFiles
-    sizeDistribution.C
+    populationBalanceSizeDistribution.C
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef sizeDistribution_H
-#define sizeDistribution_H
+#ifndef populationBalanceSizeDistribution_H
+#define populationBalanceSizeDistribution_H
 
 #include "fvMeshFunctionObject.H"
 #include "volRegion.H"
@@ -92,10 +92,10 @@ namespace functionObjects
 {
 
 /*---------------------------------------------------------------------------*\
-                      Class sizeDistribution Declaration
+             Class populationBalanceSizeDistribution Declaration
 \*---------------------------------------------------------------------------*/
 
-class sizeDistribution
+class populationBalanceSizeDistribution
 :
     public fvMeshFunctionObject,
     public volRegion
@@ -207,13 +207,13 @@ private:
 public:
 
     //- Runtime type information
-    TypeName("sizeDistribution");
+    TypeName("populationBalanceSizeDistribution");
 
 
     // Constructors
 
         //- Construct from Time and dictionary
-        sizeDistribution
+        populationBalanceSizeDistribution
         (
             const word& name,
             const Time& runTime,
@@ -221,11 +221,14 @@ public:
         );
 
         //- Disallow default bitwise copy construction
-        sizeDistribution(const sizeDistribution&) = delete;
+        populationBalanceSizeDistribution
+        (
+            const populationBalanceSizeDistribution&
+        ) = delete;
 
 
     //- Destructor
-    virtual ~sizeDistribution();
+    virtual ~populationBalanceSizeDistribution();
 
 
     // Member Functions
@@ -236,7 +239,7 @@ public:
             return wordList::null();
         }
 
-        //- Read the sizeDistribution data
+        //- Read the populationBalanceSizeDistribution data
         virtual bool read(const dictionary&);
 
         //- Execute, currently does nothing
@@ -249,7 +252,7 @@ public:
     // Member Operators
 
         //- Disallow default bitwise assignment
-        void operator=(const sizeDistribution&) = delete;
+        void operator=(const populationBalanceSizeDistribution&) = delete;
 };
 
 
diff --git a/etc/caseDicts/postProcessing/multiphase/populationBalanceMoments b/etc/caseDicts/postProcessing/multiphase/populationBalanceMoments
index 510a6d5607..7b4b1da877 100644
--- a/etc/caseDicts/postProcessing/multiphase/populationBalanceMoments
+++ b/etc/caseDicts/postProcessing/multiphase/populationBalanceMoments
@@ -12,7 +12,7 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-type                moments;
+type                populationBalanceMoments;
 libs                ("libmultiphaseEulerFoamFunctionObjects.so");
 
 populationBalance   <populationBalance>;
diff --git a/etc/caseDicts/postProcessing/multiphase/populationBalanceSizeDistribution b/etc/caseDicts/postProcessing/multiphase/populationBalanceSizeDistribution
index 71e9034a92..778fd7abaa 100644
--- a/etc/caseDicts/postProcessing/multiphase/populationBalanceSizeDistribution
+++ b/etc/caseDicts/postProcessing/multiphase/populationBalanceSizeDistribution
@@ -11,7 +11,7 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-type                sizeDistribution;
+type                populationBalanceSizeDistribution;
 libs                ("libmultiphaseEulerFoamFunctionObjects.so");
 
 populationBalance   <populationBalance>;