diff --git a/src/lagrangian/cfdemParticle/Make/files b/src/lagrangian/cfdemParticle/Make/files
index a9338ca1..9baa9dfe 100644
--- a/src/lagrangian/cfdemParticle/Make/files
+++ b/src/lagrangian/cfdemParticle/Make/files
@@ -68,6 +68,7 @@ $(forceModels)/Fines/Fines.C
 $(forceModels)/Fines/FinesFields.C
 $(forceModels)/Fines/FanningDynFines.C
 $(forceModels)/Fines/ErgunStatFines.C
+$(forceModels)/granKineticEnergy/granKineticEnergy.C
 
 $(forceModelsMS)/forceModelMS/forceModelMS.C
 $(forceModelsMS)/forceModelMS/newForceModelMS.C
diff --git a/src/lagrangian/cfdemParticle/subModels/forceModel/granKineticEnergy/granKineticEnergy.C b/src/lagrangian/cfdemParticle/subModels/forceModel/granKineticEnergy/granKineticEnergy.C
new file mode 100644
index 00000000..350b20cb
--- /dev/null
+++ b/src/lagrangian/cfdemParticle/subModels/forceModel/granKineticEnergy/granKineticEnergy.C
@@ -0,0 +1,136 @@
+/*---------------------------------------------------------------------------*\
+License
+    This is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This code is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+    You should have received a copy of the GNU General Public License
+    along with this code.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright (C) 2015- Thomas Lichtenegger, JKU Linz, Austria
+
+Description
+    calculates the Sauter mean diameter \sum d_i^3 / \sum d_i^2
+
+SourceFiles
+    granKineticEnergy.C
+\*---------------------------------------------------------------------------*/
+
+#include "error.H"
+
+#include "granKineticEnergy.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+defineTypeNameAndDebug(granKineticEnergy, 0);
+
+addToRunTimeSelectionTable
+(
+    forceModel,
+    granKineticEnergy,
+    dictionary
+);
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+// Construct from components
+granKineticEnergy::granKineticEnergy
+(
+    const dictionary& dict,
+    cfdemCloud& sm
+)
+:
+    forceModel(dict,sm),
+    propsDict_(dict.subDict(typeName + "Props")),
+    vfluc_(NULL),
+    UsFieldName_(propsDict_.lookup("granVelFieldName")),
+    UsField_(sm.mesh().lookupObject<volVectorField> (UsFieldName_)),
+    granKineticEnergy_
+    (   IOobject
+        (
+            "granKineticEnergy",
+            sm.mesh().time().timeName(),
+            sm.mesh(),
+            IOobject::NO_READ,
+            IOobject::AUTO_WRITE
+        ),
+        sm.mesh(),
+        dimensionedScalar("zero", dimensionSet(0,2,-2,0,0), 0),
+	"zeroGradient"
+    )
+{
+    allocateMyArrays();
+    granKineticEnergy_.write();
+    
+
+    // init force sub model
+    setForceSubModels(propsDict_);
+}
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+granKineticEnergy::~granKineticEnergy()
+{
+    delete vfluc_;
+}
+
+// * * * * * * * * * * * * * * * private Member Functions  * * * * * * * * * * * * * //
+void granKineticEnergy::allocateMyArrays() const
+{
+    // get memory for 2d arrays
+    double initVal=0.0;
+    particleCloud_.dataExchangeM().allocateArray(vfluc_,initVal,1);
+}
+// * * * * * * * * * * * * * * * public Member Functions  * * * * * * * * * * * * * //
+
+void granKineticEnergy::setForce() const
+{
+    allocateMyArrays();
+
+    label cellI=0;
+    vector velfluc(0,0,0);
+
+    
+    for(int index = 0;index < particleCloud_.numberOfParticles(); ++index)
+    {
+        cellI = particleCloud_.cellIDs()[index][0];
+        if(cellI >= 0)
+        {
+	    velfluc = particleCloud_.velocity(index) - UsField_[cellI];
+	    vfluc_[index][0] = magSqr(velfluc);
+	}
+    }
+    
+    granKineticEnergy_.primitiveFieldRef() = 0.0;
+
+    particleCloud_.averagingM().resetWeightFields();
+    particleCloud_.averagingM().setScalarAverage
+    (
+        granKineticEnergy_,
+        vfluc_,
+        particleCloud_.particleWeights(),
+	particleCloud_.averagingM().UsWeightField(),
+        NULL
+    );
+    
+    granKineticEnergy_ *= 0.5;
+
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// ************************************************************************* //
diff --git a/src/lagrangian/cfdemParticle/subModels/forceModel/granKineticEnergy/granKineticEnergy.H b/src/lagrangian/cfdemParticle/subModels/forceModel/granKineticEnergy/granKineticEnergy.H
new file mode 100644
index 00000000..8cc189b6
--- /dev/null
+++ b/src/lagrangian/cfdemParticle/subModels/forceModel/granKineticEnergy/granKineticEnergy.H
@@ -0,0 +1,89 @@
+/*---------------------------------------------------------------------------*\
+License
+    This is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This code is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+    You should have received a copy of the GNU General Public License
+    along with this code.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright (C) 2015- Thomas Lichtenegger, JKU Linz, Austria
+
+Description
+    calculates the granular kinetic energy
+
+SourceFiles
+    granKineticEnergy.C
+\*---------------------------------------------------------------------------*/
+
+#ifndef granKineticEnergy_H
+#define granKineticEnergy_H
+
+#include "forceModel.H"
+#include "averagingModel.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                           Class granKineticEnergy Declaration
+\*---------------------------------------------------------------------------*/
+
+class granKineticEnergy
+:
+    public forceModel
+{
+private:
+
+    dictionary propsDict_;
+
+    mutable double **vfluc_;
+    
+    mutable volScalarField granKineticEnergy_;
+    
+    word UsFieldName_;   
+
+    const volVectorField& UsField_; 
+
+    void allocateMyArrays() const;
+
+public:
+
+    //- Runtime type information
+    TypeName("granKineticEnergy");
+
+    // Constructors
+
+        //- Construct from components
+        granKineticEnergy
+        (
+            const dictionary& dict,
+            cfdemCloud& sm
+        );
+
+    // Destructor
+
+        ~granKineticEnergy();
+
+
+    // Member Functions
+        void setForce() const;
+
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/lagrangian/cfdemParticleComp/Make/files b/src/lagrangian/cfdemParticleComp/Make/files
index 93f07759..df0d4379 100644
--- a/src/lagrangian/cfdemParticleComp/Make/files
+++ b/src/lagrangian/cfdemParticleComp/Make/files
@@ -64,6 +64,7 @@ $(forceModels)/Fines/Fines.C
 $(forceModels)/Fines/FinesFields.C
 $(forceModels)/Fines/FanningDynFines.C
 $(forceModels)/Fines/ErgunStatFines.C
+$(forceModels)/granKineticEnergy/granKineticEnergy.C
 
 $(forceSubModels)/forceSubModel/newForceSubModel.C
 $(forceSubModels)/forceSubModel/forceSubModel.C