diff --git a/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C b/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C
index 394e35e536..d5707fe8fd 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C
+++ b/src/thermophysicalModels/reactionThermo/mixtures/multiComponentMixture/multiComponentMixture.C
@@ -49,7 +49,8 @@ const ThermoType& Foam::multiComponentMixture<ThermoType>::constructSpeciesData
 template<class ThermoType>
 void Foam::multiComponentMixture<ThermoType>::correctMassFractions()
 {
-    volScalarField Yt("Yt", Y_[0]);
+        // It changes Yt patches to "calculated"
+    volScalarField Yt("Yt", 1.0*Y_[0]);
 
     for (label n=1; n<Y_.size(); n++)
     {
diff --git a/tutorials/combustion/fireFoam/les/oppositeBurningPanels/0/N2 b/tutorials/combustion/fireFoam/les/oppositeBurningPanels/0/N2
index db64580e61..af44210d0c 100644
--- a/tutorials/combustion/fireFoam/les/oppositeBurningPanels/0/N2
+++ b/tutorials/combustion/fireFoam/les/oppositeBurningPanels/0/N2
@@ -21,32 +21,27 @@ boundaryField
 {
     top
     {
-        type            inletOutlet;
-        inletValue      $internalField;
-        value           $internalField;
+        type            calculated;
     }
 
     ground
     {
-        type            zeroGradient;
+        type            calculated;
     }
 
     sides
     {
-        type            inletOutlet;
-        inletValue      $internalField;
-        value           $internalField;
+        type            calculated;
     }
 
     burner
     {
-        type            fixedValue;
-        value           uniform 0;
+        type            calculated;
     }
 
     "(region0_to.*)"
     {
-        type            zeroGradient;
+        type            calculated;
     }
 }
 
diff --git a/tutorials/combustion/fireFoam/les/smallPoolFire2D/0/N2 b/tutorials/combustion/fireFoam/les/smallPoolFire2D/0/N2
index 5dd08b7903..ff1a3b1c42 100644
--- a/tutorials/combustion/fireFoam/les/smallPoolFire2D/0/N2
+++ b/tutorials/combustion/fireFoam/les/smallPoolFire2D/0/N2
@@ -23,24 +23,19 @@ boundaryField
 {
     outlet
     {
-        type            inletOutlet;
-        inletValue      $internalField;
-        value           $internalField;
+        type            calculated;
     }
     sides
     {
-        type            inletOutlet;
-        inletValue      $internalField;
-        value           $internalField;
+        type            calculated;
     }
     base
     {
-        type            zeroGradient;
+        type            calculated;
     }
     inlet
     {
-        type            fixedValue;
-        value           uniform 0;
+        type            calculated;
     }
     frontBack
     {
diff --git a/tutorials/combustion/fireFoam/les/smallPoolFire3D/0/N2 b/tutorials/combustion/fireFoam/les/smallPoolFire3D/0/N2
index 774ae2ad30..f44c142482 100644
--- a/tutorials/combustion/fireFoam/les/smallPoolFire3D/0/N2
+++ b/tutorials/combustion/fireFoam/les/smallPoolFire3D/0/N2
@@ -23,24 +23,19 @@ boundaryField
 {
     outlet
     {
-        type            inletOutlet;
-        inletValue      $internalField;
-        value           $internalField;
+        type            calculated;
     }
     sides
     {
-        type            inletOutlet;
-        inletValue      $internalField;
-        value           $internalField;
+        type            calculated;
     }
     base
     {
-        type            zeroGradient;
+        type            calculated;
     }
     inlet
     {
-        type            fixedValue;
-        value           uniform 0;
+        type            calculated;
     }
 }
 
diff --git a/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/0/N2 b/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/0/N2
index 88bb6fb5aa..ac188ad505 100644
--- a/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/0/N2
+++ b/tutorials/combustion/reactingFoam/ras/counterFlowFlame2D/0/N2
@@ -23,20 +23,15 @@ boundaryField
 {
     fuel
     {
-        type            fixedValue;
-        value           uniform 0.0;
+        type            calculated;
     }
     air
     {
-        type            fixedValue;
-        value           uniform 0.77;
+        type            calculated;
     }
     outlet
     {
-        type            inletOutlet;
-        inletValue      uniform 0.77;
-        value           uniform 0.77;
-
+        type            calculated;
     }
     frontAndBack
     {