diff --git a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/0/N b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/0/N
deleted file mode 100644
index 185a7387..00000000
--- a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/0/N
+++ /dev/null
@@ -1,50 +0,0 @@
-/*--------------------------------*- C++ -*----------------------------------*\
-| =========                 |                                                 |
-| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
-|  \\    /   O peration     | Version:  1.6                                   |
-|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
-|    \\/     M anipulation  |                                                 |
-\*---------------------------------------------------------------------------*/
-FoamFile
-{
-    version     2.0;
-    format      ascii;
-    class       volScalarField;
-    object      N;
-}
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-dimensions      [1 -3 0 0 0 0 0];
-
-internalField   uniform 0;
-
-boundaryField
-{
-    top
-    {
-        type            zeroGradient;
-    }
-
-    bottom
-    {
-        type            zeroGradient;
-    }
-
-    side-walls
-    {
-        type            zeroGradient;
-    }
-
-    inlet
-    {
-        type            zeroGradient;
-    }
-
-    outlet
-    {
-        type            zeroGradient;
-    }
-}
-
-
-// ************************************************************************* //
diff --git a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/constant/couplingProperties b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/constant/couplingProperties
index 98c3ee4a..230f7919 100644
--- a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/constant/couplingProperties
+++ b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/constant/couplingProperties
@@ -107,8 +107,8 @@ speciesProps
 	densityFieldName 	"rho";
 	partRhoName		"partRho";
         voidfractionFieldName   "voidfraction";
-        totalMoleFieldName      "N";
-        partMoleName            "partN";
+        totalMoleFieldName      "molarConc";
+        partMoleName            "partMolarConc";
         pressureFieldName       "p";
         partPName               "partP";
 	Nevery			10;
diff --git a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/system/controlDict b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/system/controlDict
index 1f7d0e4a..e575b004 100644
--- a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/system/controlDict
+++ b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model/CFD/system/controlDict
@@ -106,6 +106,11 @@ functions
         );
     }
 
+    moleFrac
+    {
+        type	rhoReactionThermoMoleFractions;
+    }
+
 /*    Average-O2
     {
         type            fieldAverage;
diff --git a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/0/N b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/0/N
deleted file mode 100644
index 185a7387..00000000
--- a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/0/N
+++ /dev/null
@@ -1,50 +0,0 @@
-/*--------------------------------*- C++ -*----------------------------------*\
-| =========                 |                                                 |
-| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
-|  \\    /   O peration     | Version:  1.6                                   |
-|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
-|    \\/     M anipulation  |                                                 |
-\*---------------------------------------------------------------------------*/
-FoamFile
-{
-    version     2.0;
-    format      ascii;
-    class       volScalarField;
-    object      N;
-}
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-dimensions      [1 -3 0 0 0 0 0];
-
-internalField   uniform 0;
-
-boundaryField
-{
-    top
-    {
-        type            zeroGradient;
-    }
-
-    bottom
-    {
-        type            zeroGradient;
-    }
-
-    side-walls
-    {
-        type            zeroGradient;
-    }
-
-    inlet
-    {
-        type            zeroGradient;
-    }
-
-    outlet
-    {
-        type            zeroGradient;
-    }
-}
-
-
-// ************************************************************************* //
diff --git a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/constant/couplingProperties b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/constant/couplingProperties
index a135f6d0..c286cb4e 100644
--- a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/constant/couplingProperties
+++ b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/constant/couplingProperties
@@ -107,8 +107,8 @@ speciesProps
 	densityFieldName 	"rho";
 	partRhoName		"partRho";
         voidfractionFieldName   "voidfraction";
-        totalMoleFieldName      "N";
-        partMoleName            "partN";
+        totalMoleFieldName      "molarConc";
+        partMoleName            "partMolarConc";
         pressureFieldName       "p";
         partPName               "partP";
 	Nevery			1;
diff --git a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/system/controlDict b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/system/controlDict
index 579aa9ab..e0c9228f 100644
--- a/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/system/controlDict
+++ b/tutorials/cfdemSolverRhoPimpleChem/Shrinking_particle_model_multispecies/CFD/system/controlDict
@@ -106,6 +106,11 @@ functions
             rho
         );
     }
+
+    moleFrac
+    {
+        type	rhoReactionThermoMoleFractions;
+    }
 } 
 
 // ************************************************************************* //