diff --git a/flameControllingVelocity/Make/options b/flameControllingVelocity/Make/options
index 97dc674..c0aaa29 100644
--- a/flameControllingVelocity/Make/options
+++ b/flameControllingVelocity/Make/options
@@ -1,4 +1,5 @@
 EXE_INC = \
+          -g \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
     -I$(LIB_SRC)/triSurface/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude \
diff --git a/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.C b/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.C
index 762ef2f..6caf05a 100644
--- a/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.C
+++ b/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.C
@@ -27,6 +27,7 @@ License
 #include "addToRunTimeSelectionTable.H"
 #include "volFields.H"
 #include "fvPatchFieldMapper.H"
+#include "fvcVolumeIntegrate.H"
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
@@ -38,7 +39,9 @@ flameControllingVelocityFvPatchVectorField
 )
 :
     fixedValueFvPatchVectorField(p, iF),
-    refValue_(p.size())
+    refValue_(p.size()),
+    Tref_(300.0),
+    startTime_(db().time().startTime().value())
 {}
 
 
@@ -51,7 +54,10 @@ flameControllingVelocityFvPatchVectorField
 )
 :
     fixedValueFvPatchVectorField(p, iF),
-    refValue_("refValue", dict, p.size())
+    refValue_("refValue", dict, p.size()),
+    Tref_(dict.lookupOrDefault<scalar>("Tref", 300.0)),
+    startTime_(dict.lookupOrDefault("startTime", db().time().startTime().value())),
+    lastVolume(-1)
 {
     fvPatchVectorField::operator=(refValue_*patch().nf());
 }
@@ -67,7 +73,9 @@ flameControllingVelocityFvPatchVectorField
 )
 :
     fixedValueFvPatchVectorField(p, iF),
-    refValue_(ptf.refValue_, mapper)
+    refValue_(ptf.refValue_, mapper),
+    Tref_(ptf.Tref_),
+    startTime_(ptf.startTime_)
 {
     // Note: calculate product only on ptf to avoid multiplication on
     // unset values in reconstructPar.
@@ -89,7 +97,9 @@ flameControllingVelocityFvPatchVectorField
 )
 :
     fixedValueFvPatchVectorField(pivpvf),
-    refValue_(pivpvf.refValue_)
+    refValue_(pivpvf.refValue_),
+    Tref_(pivpvf.Tref_),
+    startTime_(pivpvf.startTime_)
 {}
 
 
@@ -101,7 +111,9 @@ flameControllingVelocityFvPatchVectorField
 )
 :
     fixedValueFvPatchVectorField(pivpvf, iF),
-    refValue_(pivpvf.refValue_)
+    refValue_(pivpvf.refValue_),
+    Tref_(pivpvf.Tref_),
+    startTime_(pivpvf.startTime_)
 {}
 
 
@@ -139,6 +151,53 @@ void Foam::flameControllingVelocityFvPatchVectorField::updateCoeffs()
         return;
     }
 
+    scalar thisTime = db().time().timeOutputValue();
+
+
+    const volScalarField &T (db().lookupObject<volScalarField>("T"));
+
+    dimensionedScalar Tref("Tref", T.dimensions(), Tref_);
+
+    scalar lowTVolume =  fvc::domainIntegrate(Foam::neg(T - Tref)).value();
+
+    if (thisTime - lastTime > 0.0 && startTime_ <= thisTime)
+    {
+        scalar domainVolume = gSum(patch().boundaryMesh().mesh().V());
+
+        Info << endl;
+        Info << "Volume calculation test" ;
+        Info << lowTVolume << token::END_STATEMENT
+            << domainVolume << token::END_STATEMENT
+            << lowTVolume / domainVolume;
+        Info << endl;
+
+        scalar dt = thisTime - lastTime;
+
+        if (lastVolume < 0)
+        {
+            lastVolume = lowTVolume;
+        }
+
+        scalar dTV = lowTVolume - lastVolume;
+
+        scalar patchArea = gSum(patch().magSf());
+
+        scalar dVel = (dTV / dt  / patchArea);
+
+        Info << endl;
+        Info << "delta Velocity " ;
+        Info << dVel << token::END_STATEMENT;
+        Info << endl;
+
+
+        refValue_ += dVel;
+
+    }
+
+    lastTime = thisTime;
+
+    // lastVolume = lowTVolume;
+
     fvPatchVectorField::operator=(refValue_*patch().nf());
     fvPatchVectorField::updateCoeffs();
 }
@@ -148,6 +207,8 @@ void Foam::flameControllingVelocityFvPatchVectorField::write(Ostream& os) const
 {
     fvPatchVectorField::write(os);
     refValue_.writeEntry("refValue", os);
+    writeEntryIfDifferent(os, "Tref", Tref_, 300.0);
+    writeEntryIfDifferent(os, "startTime", startTime_, db().time().startTime().value());
 }
 
 
diff --git a/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.H b/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.H
index b0df8d4..c8f2791 100644
--- a/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.H
+++ b/flameControllingVelocity/flameControllingVelocityFvPatchVectorField.H
@@ -81,6 +81,15 @@ class flameControllingVelocityFvPatchVectorField
 
         scalarField refValue_;
 
+        // scalar fuelVolumeRatio; 
+
+        scalar Tref_;
+
+        scalar startTime_;
+
+        scalar lastTime;
+
+        scalar lastVolume;
 
 public: