diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/ddtScheme/ddtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/ddtScheme/ddtScheme.C
index 28ec0eeee7..eb69175ac4 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/ddtScheme/ddtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/ddtScheme/ddtScheme.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -156,6 +156,8 @@ tmp<surfaceScalarField> ddtScheme<Type>::fvcDdtPhiCoeff
     const fluxFieldType& phiCorr
 )
 {
+    // Courant number limited formulation
+    /*
     tmp<surfaceScalarField> tddtCouplingCoeff = scalar(1)
       - min
         (
@@ -163,6 +165,16 @@ tmp<surfaceScalarField> ddtScheme<Type>::fvcDdtPhiCoeff
            *mesh().time().deltaT()*mesh().deltaCoeffs()/mesh().magSf(),
             scalar(1)
         );
+    */
+
+    // Flux normalised formulation
+    tmp<surfaceScalarField> tddtCouplingCoeff = scalar(1)
+      - min
+        (
+            mag(phiCorr)
+           /(mag(phi) + dimensionedScalar("small", phi.dimensions(), SMALL)),
+            scalar(1)
+        );
 
     surfaceScalarField& ddtCouplingCoeff = tddtCouplingCoeff.ref();
 
@@ -203,7 +215,7 @@ tmp<surfaceScalarField> ddtScheme<Type>::fvcDdtPhiCoeff
     const volScalarField& rho
 )
 {
-    return fvcDdtPhiCoeff(U, phi, phiCorr/fvc::interpolate(rho));
+    return fvcDdtPhiCoeff(U, phi, phiCorr);
 }
 
 
@@ -230,7 +242,7 @@ tmp<surfaceScalarField> ddtScheme<Type>::fvcDdtPhiCoeff
     (
         U,
         phi,
-        (phi - fvc::dotInterpolate(mesh().Sf(), U))/fvc::interpolate(rho)
+        (phi - fvc::dotInterpolate(mesh().Sf(), U))
     );
 }
 
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C b/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C
index 52e77d20d5..75ef442deb 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -347,6 +347,8 @@ localEulerDdtScheme<Type>::fvmDdt
 }
 
 
+/*
+// Courant number limited formulation
 template<class Type>
 tmp<surfaceScalarField> localEulerDdtScheme<Type>::fvcDdtPhiCoeff
 (
@@ -355,6 +357,7 @@ tmp<surfaceScalarField> localEulerDdtScheme<Type>::fvcDdtPhiCoeff
     const fluxFieldType& phiCorr
 )
 {
+    // Courant number limited formulation
     tmp<surfaceScalarField> tddtCouplingCoeff = scalar(1)
       - min
         (
@@ -391,6 +394,7 @@ tmp<surfaceScalarField> localEulerDdtScheme<Type>::fvcDdtPhiCoeff
 
     return tddtCouplingCoeff;
 }
+*/
 
 
 template<class Type>
diff --git a/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.H b/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.H
index edb911607e..c5f3ded8f8 100644
--- a/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.H
+++ b/src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -215,14 +215,14 @@ public:
 
         typedef typename ddtScheme<Type>::fluxFieldType fluxFieldType;
 
-        using ddtScheme<Type>::fvcDdtPhiCoeff;
+        // using ddtScheme<Type>::fvcDdtPhiCoeff;
 
-        virtual tmp<surfaceScalarField> fvcDdtPhiCoeff
-        (
-            const GeometricField<Type, fvPatchField, volMesh>& U,
-            const fluxFieldType& phi,
-            const fluxFieldType& phiCorr
-        );
+        // virtual tmp<surfaceScalarField> fvcDdtPhiCoeff
+        // (
+        //     const GeometricField<Type, fvPatchField, volMesh>& U,
+        //     const fluxFieldType& phi,
+        //     const fluxFieldType& phiCorr
+        // );
 
         virtual tmp<fluxFieldType> fvcDdtUfCorr
         (