diff --git a/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C b/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
index e5a9f2094e..d318bd7384 100644
--- a/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
+++ b/applications/utilities/preProcessing/viewFactorsGen/viewFactorsGen.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -31,7 +31,7 @@ Description
     Each view factor between the agglomerated faces i and j (Fij) is calculated
     using a double integral of the sub-areas composing the agglomaration.
 
-    The patches involved in the view factor calculation are taken from the Qr
+    The patches involved in the view factor calculation are taken from the qr
     volScalarField (radiative flux) when is greyDiffusiveRadiationViewFactor
     otherwise they are not included.
 
@@ -272,11 +272,11 @@ int main(int argc, char *argv[])
 
     const label debug = viewFactorDict.lookupOrDefault<label>("debug", 0);
 
-    volScalarField Qr
+    volScalarField qr
     (
         IOobject
         (
-            "Qr",
+            "qr",
             runTime.timeName(),
             mesh,
             IOobject::MUST_READ,
@@ -338,17 +338,17 @@ int main(int argc, char *argv[])
 
     labelList viewFactorsPatches(patches.size());
 
-    const volScalarField::Boundary& Qrb = Qr.boundaryField();
+    const volScalarField::Boundary& qrb = qr.boundaryField();
 
     label count = 0;
-    forAll(Qrb, patchi)
+    forAll(qrb, patchi)
     {
         const polyPatch& pp = patches[patchi];
-        const fvPatchScalarField& QrpI = Qrb[patchi];
+        const fvPatchScalarField& qrpI = qrb[patchi];
 
-        if ((isA<fixedValueFvPatchScalarField>(QrpI)) && (pp.size() > 0))
+        if ((isA<fixedValueFvPatchScalarField>(qrpI)) && (pp.size() > 0))
         {
-            viewFactorsPatches[count] = QrpI.patch().index();
+            viewFactorsPatches[count] = qrpI.patch().index();
             nCoarseFaces += coarsePatches[patchi].size();
             nFineFaces += patches[patchi].size();
             count ++;
diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.C b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.C
index 71c695e80d..6ed6e4f72a 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.C
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -53,9 +53,9 @@ thermalBaffle1DFvPatchScalarField
     Qs_(p.size()),
     solidDict_(),
     solidPtr_(nullptr),
-    QrPrevious_(p.size()),
-    QrRelaxation_(1),
-    QrName_("undefined-Qr")
+    qrPrevious_(p.size()),
+    qrRelaxation_(1),
+    qrName_("undefined-qr")
 {}
 
 
@@ -77,9 +77,9 @@ thermalBaffle1DFvPatchScalarField
     Qs_(ptf.Qs_, mapper),
     solidDict_(ptf.solidDict_),
     solidPtr_(ptf.solidPtr_),
-    QrPrevious_(ptf.QrPrevious_, mapper),
-    QrRelaxation_(ptf.QrRelaxation_),
-    QrName_(ptf.QrName_)
+    qrPrevious_(ptf.qrPrevious_, mapper),
+    qrRelaxation_(ptf.qrRelaxation_),
+    qrName_(ptf.qrName_)
 {}
 
 
@@ -100,9 +100,9 @@ thermalBaffle1DFvPatchScalarField
     Qs_(p.size(), 0),
     solidDict_(dict),
     solidPtr_(),
-    QrPrevious_(p.size(), 0.0),
-    QrRelaxation_(dict.lookupOrDefault<scalar>("relaxation", 1)),
-    QrName_(dict.lookupOrDefault<word>("Qr", "none"))
+    qrPrevious_(p.size(), 0.0),
+    qrRelaxation_(dict.lookupOrDefault<scalar>("relaxation", 1)),
+    qrName_(dict.lookupOrDefault<word>("qr", "none"))
 {
     fvPatchScalarField::operator=(scalarField("value", dict, p.size()));
 
@@ -116,9 +116,9 @@ thermalBaffle1DFvPatchScalarField
         Qs_ = scalarField("Qs", dict, p.size());
     }
 
-    if (dict.found("QrPrevious"))
+    if (dict.found("qrPrevious"))
     {
-        QrPrevious_ = scalarField("QrPrevious", dict, p.size());
+        qrPrevious_ = scalarField("qrPrevious", dict, p.size());
     }
 
     if (dict.found("refValue") && baffleActivated_)
@@ -154,9 +154,9 @@ thermalBaffle1DFvPatchScalarField
     Qs_(ptf.Qs_),
     solidDict_(ptf.solidDict_),
     solidPtr_(ptf.solidPtr_),
-    QrPrevious_(ptf.QrPrevious_),
-    QrRelaxation_(ptf.QrRelaxation_),
-    QrName_(ptf.QrName_)
+    qrPrevious_(ptf.qrPrevious_),
+    qrRelaxation_(ptf.qrRelaxation_),
+    qrName_(ptf.qrName_)
 {}
 
 
@@ -176,9 +176,9 @@ thermalBaffle1DFvPatchScalarField
     Qs_(ptf.Qs_),
     solidDict_(ptf.solidDict_),
     solidPtr_(ptf.solidPtr_),
-    QrPrevious_(ptf.QrPrevious_),
-    QrRelaxation_(ptf.QrRelaxation_),
-    QrName_(ptf.QrName_)
+    qrPrevious_(ptf.qrPrevious_),
+    qrRelaxation_(ptf.qrRelaxation_),
+    qrName_(ptf.qrName_)
 {}
 
 
@@ -364,15 +364,15 @@ void thermalBaffle1DFvPatchScalarField<solidType>::updateCoeffs()
             patch().template lookupPatchField<volScalarField, scalar>(TName_);
 
 
-        scalarField Qr(Tp.size(), 0.0);
+        scalarField qr(Tp.size(), 0.0);
 
-        if (QrName_ != "none")
+        if (qrName_ != "none")
         {
-            Qr = patch().template lookupPatchField<volScalarField, scalar>
-                (QrName_);
+            qr = patch().template lookupPatchField<volScalarField, scalar>
+                (qrName_);
 
-            Qr = QrRelaxation_*Qr + (1.0 - QrRelaxation_)*QrPrevious_;
-            QrPrevious_ = Qr;
+            qr = qrRelaxation_*qr + (1.0 - qrRelaxation_)*qrPrevious_;
+            qrPrevious_ = qr;
         }
 
         tmp<scalarField> Ti = patchInternalField();
@@ -393,7 +393,7 @@ void thermalBaffle1DFvPatchScalarField<solidType>::updateCoeffs()
 
         scalarField KDeltaSolid(kappas/baffleThickness());
 
-        scalarField alpha(KDeltaSolid - Qr/Tp);
+        scalarField alpha(KDeltaSolid - qr/Tp);
 
         valueFraction() = alpha/(alpha + myKDelta);
 
@@ -435,9 +435,9 @@ void thermalBaffle1DFvPatchScalarField<solidType>::write(Ostream& os) const
         solid().write(os);
     }
 
-    QrPrevious_.writeEntry("QrPrevious", os);
-    os.writeKeyword("Qr")<< QrName_ << token::END_STATEMENT << nl;
-    os.writeKeyword("relaxation")<< QrRelaxation_
+    qrPrevious_.writeEntry("qrPrevious", os);
+    os.writeKeyword("qr")<< qrName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("relaxation")<< qrRelaxation_
         << token::END_STATEMENT << nl;
 }
 
diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.H b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.H
index af6c701bc7..f9491806fe 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.H
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/thermalBaffle1D/thermalBaffle1DFvPatchScalarField.H
@@ -31,8 +31,8 @@ Description
     This BC solves a steady 1D thermal baffle.
 
     The solid properties are specify as dictionary. Optionaly radiative heat
-    flux (Qr) can be incorporated into the balance. Some under-relaxation might
-    be needed on Qr.  Baffle and solid properties need to be specified on the
+    flux (qr) can be incorporated into the balance. Some under-relaxation might
+    be needed on qr.  Baffle and solid properties need to be specified on the
     master side of the baffle.
 
 Usage
@@ -48,7 +48,7 @@ Usage
         thickness       uniform 0.005;  // thickness [m]
         Qs              uniform 100;    // heat flux [W/m2]
 
-        Qr              none;
+        qr              none;
         relaxation      1;
 
         // Solid thermo
@@ -78,7 +78,7 @@ Usage
         type   compressible::thermalBaffle1D<hConstSolidThermoPhysics>;
         samplePatch     <masterPatchName>;
 
-        Qr              none;
+        qr              none;
         relaxation      1;
     }
     \endverbatim
@@ -132,14 +132,14 @@ class thermalBaffle1DFvPatchScalarField
         //- Solid thermo
         mutable autoPtr<solidType> solidPtr_;
 
-        //- Cache Qr for relaxation
-        scalarField QrPrevious_;
+        //- Cache qr for relaxation
+        scalarField qrPrevious_;
 
-        //- Relaxation for Qr
-        scalar QrRelaxation_;
+        //- Relaxation for qr
+        scalar qrRelaxation_;
 
         //- Name of the radiative heat flux in local region
-        const word QrName_;
+        const word qrName_;
 
 
     // Private members
diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
index d69c96ee2c..d238c6fc90 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -48,8 +48,8 @@ turbulentTemperatureRadCoupledMixedFvPatchScalarField
     mixedFvPatchScalarField(p, iF),
     temperatureCoupledBase(patch(), "undefined", "undefined", "undefined-K"),
     TnbrName_("undefined-Tnbr"),
-    QrNbrName_("undefined-QrNbr"),
-    QrName_("undefined-Qr"),
+    qrNbrName_("undefined-qrNbr"),
+    qrName_("undefined-qr"),
     thicknessLayers_(0),
     kappaLayers_(0),
     contactRes_(0)
@@ -72,8 +72,8 @@ turbulentTemperatureRadCoupledMixedFvPatchScalarField
     mixedFvPatchScalarField(psf, p, iF, mapper),
     temperatureCoupledBase(patch(), psf),
     TnbrName_(psf.TnbrName_),
-    QrNbrName_(psf.QrNbrName_),
-    QrName_(psf.QrName_),
+    qrNbrName_(psf.qrNbrName_),
+    qrName_(psf.qrName_),
     thicknessLayers_(psf.thicknessLayers_),
     kappaLayers_(psf.kappaLayers_),
     contactRes_(psf.contactRes_)
@@ -91,8 +91,8 @@ turbulentTemperatureRadCoupledMixedFvPatchScalarField
     mixedFvPatchScalarField(p, iF),
     temperatureCoupledBase(patch(), dict),
     TnbrName_(dict.lookupOrDefault<word>("Tnbr", "T")),
-    QrNbrName_(dict.lookupOrDefault<word>("QrNbr", "none")),
-    QrName_(dict.lookupOrDefault<word>("Qr", "none")),
+    qrNbrName_(dict.lookupOrDefault<word>("qrNbr", "none")),
+    qrName_(dict.lookupOrDefault<word>("qr", "none")),
     thicknessLayers_(0),
     kappaLayers_(0),
     contactRes_(0.0)
@@ -152,8 +152,8 @@ turbulentTemperatureRadCoupledMixedFvPatchScalarField
     mixedFvPatchScalarField(psf, iF),
     temperatureCoupledBase(patch(), psf),
     TnbrName_(psf.TnbrName_),
-    QrNbrName_(psf.QrNbrName_),
-    QrName_(psf.QrName_),
+    qrNbrName_(psf.qrNbrName_),
+    qrName_(psf.qrName_),
     thicknessLayers_(psf.thicknessLayers_),
     kappaLayers_(psf.kappaLayers_),
     contactRes_(psf.contactRes_)
@@ -212,22 +212,22 @@ void turbulentTemperatureRadCoupledMixedFvPatchScalarField::updateCoeffs()
 
     scalarField KDelta(kappa(Tp)*patch().deltaCoeffs());
 
-    scalarField Qr(Tp.size(), 0.0);
-    if (QrName_ != "none")
+    scalarField qr(Tp.size(), 0.0);
+    if (qrName_ != "none")
     {
-        Qr = patch().lookupPatchField<volScalarField, scalar>(QrName_);
+        qr = patch().lookupPatchField<volScalarField, scalar>(qrName_);
     }
 
-    scalarField QrNbr(Tp.size(), 0.0);
-    if (QrNbrName_ != "none")
+    scalarField qrNbr(Tp.size(), 0.0);
+    if (qrNbrName_ != "none")
     {
-        QrNbr = nbrPatch.lookupPatchField<volScalarField, scalar>(QrNbrName_);
-        mpp.distribute(QrNbr);
+        qrNbr = nbrPatch.lookupPatchField<volScalarField, scalar>(qrNbrName_);
+        mpp.distribute(qrNbr);
     }
 
     valueFraction() = KDeltaNbr/(KDeltaNbr + KDelta);
     refValue() = TcNbr;
-    refGrad() = (Qr + QrNbr)/kappa(Tp);
+    refGrad() = (qr + qrNbr)/kappa(Tp);
 
     mixedFvPatchScalarField::updateCoeffs();
 
@@ -261,8 +261,8 @@ void turbulentTemperatureRadCoupledMixedFvPatchScalarField::write
 {
     mixedFvPatchScalarField::write(os);
     os.writeKeyword("Tnbr")<< TnbrName_ << token::END_STATEMENT << nl;
-    os.writeKeyword("QrNbr")<< QrNbrName_ << token::END_STATEMENT << nl;
-    os.writeKeyword("Qr")<< QrName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("qrNbr")<< qrNbrName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("qr")<< qrName_ << token::END_STATEMENT << nl;
     thicknessLayers_.writeEntry("thicknessLayers", os);
     kappaLayers_.writeEntry("kappaLayers", os);
 
diff --git a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.H b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.H
index 2753620965..37691d22d3 100644
--- a/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.H
+++ b/src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureRadCoupledMixed/turbulentTemperatureRadCoupledMixedFvPatchScalarField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -38,8 +38,8 @@ Usage
     \table
         Property     | Description             | Required    | Default value
         Tnbr         | name of the field    | no | T
-        QrNbr      | name of the radiative flux in the nbr region | no | none
-        Qr         | name of the radiative flux in this region | no | none
+        qrNbr      | name of the radiative flux in the nbr region | no | none
+        qr         | name of the radiative flux in this region | no | none
         thicknessLayers | list of thicknesses per layer [m] | no |
         kappaLayers  | list of thermal conductivites per layer [W/m/K] | no |
         kappaMethod  | inherited from temperatureCoupledBase | inherited |
@@ -52,8 +52,8 @@ Usage
     {
         type            compressible::turbulentTemperatureRadCoupledMixed;
         Tnbr            T;
-        QrNbr           Qr; // or none. Name of Qr field on neighbour region
-        Qr              Qr; // or none. Name of Qr field on local region
+        qrNbr           qr; // or none. Name of qr field on neighbour region
+        qr              qr; // or none. Name of qr field on local region
         thicknessLayers (0.1 0.2 0.3 0.4);
         kappaLayers     (1 2 3 4);
         kappaMethod     lookup;
@@ -101,10 +101,10 @@ class turbulentTemperatureRadCoupledMixedFvPatchScalarField
         const word TnbrName_;
 
          //- Name of the radiative heat flux in the neighbout region
-        const word QrNbrName_;
+        const word qrNbrName_;
 
         //- Name of the radiative heat flux in local region
-        const word QrName_;
+        const word qrName_;
 
         //- Thickness of layers
         scalarList thicknessLayers_;
diff --git a/src/functionObjects/field/wallHeatFlux/wallHeatFlux.C b/src/functionObjects/field/wallHeatFlux/wallHeatFlux.C
index 67dfc57bff..2c7531fc88 100644
--- a/src/functionObjects/field/wallHeatFlux/wallHeatFlux.C
+++ b/src/functionObjects/field/wallHeatFlux/wallHeatFlux.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2016-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -78,12 +78,12 @@ void Foam::functionObjects::wallHeatFlux::calcHeatFlux
         wallHeatFluxBf[patchi] = heatFluxBf[patchi];
     }
 
-    if (foundObject<volScalarField>("Qr"))
+    if (foundObject<volScalarField>("qr"))
     {
-        const volScalarField& Qr = lookupObject<volScalarField>("Qr");
+        const volScalarField& qr = lookupObject<volScalarField>("qr");
 
         const volScalarField::Boundary& radHeatFluxBf =
-            Qr.boundaryField();
+            qr.boundaryField();
 
         forAll(wallHeatFluxBf, patchi)
         {
diff --git a/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.C b/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.C
index 6d6b1aaf18..81c22ddd5b 100644
--- a/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.C
+++ b/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.C
@@ -58,7 +58,7 @@ void reactingOneDim::readReactingOneDimControls()
     coeffs().lookup("minimumDelta") >> minimumDelta_;
 
     coeffs().lookup("gasHSource") >> gasHSource_;
-    coeffs().lookup("QrHSource") >> QrHSource_;
+    coeffs().lookup("qrHSource") >> qrHSource_;
     useChemistrySolvers_ =
         coeffs().lookupOrDefault<bool>("useChemistrySolvers", true);
 }
@@ -92,41 +92,41 @@ bool reactingOneDim::read(const dictionary& dict)
 }
 
 
-void reactingOneDim::updateQr()
+void reactingOneDim::updateqr()
 {
-    // Update local Qr from coupled Qr field
-    Qr_ == dimensionedScalar("zero", Qr_.dimensions(), 0.0);
+    // Update local qr from coupled qr field
+    qr_ == dimensionedScalar("zero", qr_.dimensions(), 0.0);
 
     // Retrieve field from coupled region using mapped boundary conditions
-    Qr_.correctBoundaryConditions();
+    qr_.correctBoundaryConditions();
 
-    volScalarField::Boundary& QrBf = Qr_.boundaryFieldRef();
+    volScalarField::Boundary& qrBf = qr_.boundaryFieldRef();
 
     forAll(intCoupledPatchIDs_, i)
     {
         const label patchi = intCoupledPatchIDs_[i];
 
-        // Qr is positive going in the solid
+        // qr is positive going in the solid
         // If the surface is emitting the radiative flux is set to zero
-        QrBf[patchi] = max(QrBf[patchi], scalar(0.0));
+        qrBf[patchi] = max(qrBf[patchi], scalar(0.0));
     }
 
     const vectorField& cellC = regionMesh().cellCentres();
 
     tmp<volScalarField> kappa = kappaRad();
 
-    // Propagate Qr through 1-D regions
+    // Propagate qr through 1-D regions
     label localPyrolysisFacei = 0;
     forAll(intCoupledPatchIDs_, i)
     {
         const label patchi = intCoupledPatchIDs_[i];
 
-        const scalarField& Qrp = Qr_.boundaryField()[patchi];
+        const scalarField& qrp = qr_.boundaryField()[patchi];
         const vectorField& Cf = regionMesh().Cf().boundaryField()[patchi];
 
-        forAll(Qrp, facei)
+        forAll(qrp, facei)
         {
-            const scalar Qr0 = Qrp[facei];
+            const scalar qr0 = qrp[facei];
             point Cf0 = Cf[facei];
             const labelList& cells = boundaryFaceCells_[localPyrolysisFacei++];
             scalar kappaInt = 0.0;
@@ -136,7 +136,7 @@ void reactingOneDim::updateQr()
                 const point& Cf1 = cellC[celli];
                 const scalar delta = mag(Cf1 - Cf0);
                 kappaInt += kappa()[celli]*delta;
-                Qr_[celli] = Qr0*exp(-kappaInt);
+                qr_[celli] = qr0*exp(-kappaInt);
                 Cf0 = Cf1;
             }
         }
@@ -202,9 +202,9 @@ void reactingOneDim::updatePhiGas()
 
 void reactingOneDim::updateFields()
 {
-    if (QrHSource_)
+    if (qrHSource_)
     {
-        updateQr();
+        updateqr();
     }
 
     updatePhiGas();
@@ -332,10 +332,10 @@ void reactingOneDim::solveEnergy()
         hEqn += fvc::div(phiGas);
     }
 
-    if (QrHSource_)
+    if (qrHSource_)
     {
-        const surfaceScalarField phiQr(fvc::interpolate(Qr_)*nMagSf());
-        hEqn += fvc::div(phiQr);
+        const surfaceScalarField phiqr(fvc::interpolate(qr_)*nMagSf());
+        hEqn += fvc::div(phiqr);
     }
 
     if (regionMesh().moving())
@@ -447,11 +447,11 @@ reactingOneDim::reactingOneDim
         dimensionedScalar("zero", dimEnergy/dimTime/dimVolume, 0.0)
     ),
 
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             time().timeName(),
             regionMesh(),
             IOobject::MUST_READ,
@@ -465,7 +465,7 @@ reactingOneDim::reactingOneDim
     totalGasMassFlux_(0.0),
     totalHeatRR_(dimensionedScalar("zero", dimEnergy/dimTime, 0.0)),
     gasHSource_(false),
-    QrHSource_(false),
+    qrHSource_(false),
     useChemistrySolvers_(true)
 {
     if (active_)
@@ -547,11 +547,11 @@ reactingOneDim::reactingOneDim
         dimensionedScalar("zero", dimEnergy/dimTime/dimVolume, 0.0)
     ),
 
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             time().timeName(),
             regionMesh(),
             IOobject::MUST_READ,
@@ -565,7 +565,7 @@ reactingOneDim::reactingOneDim
     totalGasMassFlux_(0.0),
     totalHeatRR_(dimensionedScalar("zero", dimEnergy/dimTime, 0.0)),
     gasHSource_(false),
-    QrHSource_(false),
+    qrHSource_(false),
     useChemistrySolvers_(true)
 {
     if (active_)
diff --git a/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.H b/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.H
index a5b6ecfbce..60083838a7 100644
--- a/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.H
+++ b/src/regionModels/pyrolysisModels/reactingOneDim/reactingOneDim.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -125,10 +125,10 @@ protected:
 
             //- Coupled region radiative heat flux [W/m2]
             //  Requires user to input mapping info for coupled patches
-            //volScalarField QrCoupled_;
+            //volScalarField qrCoupled_;
 
             //- In depth radiative heat flux [W/m2]
-            volScalarField Qr_;
+            volScalarField qr_;
 
 
         // Checks
@@ -152,7 +152,7 @@ protected:
             bool  gasHSource_;
 
             //- Add in depth radiation source term
-            bool  QrHSource_;
+            bool  qrHSource_;
 
             //- Use chemistry solvers (ode or sequential)
             bool useChemistrySolvers_;
@@ -173,7 +173,7 @@ protected:
         void updateMesh(const scalarField& mass0);
 
         //- Update radiative flux in pyrolysis region
-        void updateQr();
+        void updateqr();
 
         //- Update enthalpy flux for pyrolysis gases
         void updatePhiGas();
diff --git a/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.C b/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.C
index e5152f43c4..dac63860b8 100644
--- a/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.C
+++ b/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2013-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2013-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -110,7 +110,7 @@ filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
     filmRegionName_("surfaceFilmProperties"),
     pyrolysisRegionName_("pyrolysisProperties"),
     TnbrName_("undefined-Tnbr"),
-    QrName_("undefined-Qr"),
+    qrName_("undefined-qr"),
     convectiveScaling_(1.0),
     filmDeltaDry_(0.0),
     filmDeltaWet_(0.0)
@@ -135,7 +135,7 @@ filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
     filmRegionName_(psf.filmRegionName_),
     pyrolysisRegionName_(psf.pyrolysisRegionName_),
     TnbrName_(psf.TnbrName_),
-    QrName_(psf.QrName_),
+    qrName_(psf.qrName_),
     convectiveScaling_(psf.convectiveScaling_),
     filmDeltaDry_(psf.filmDeltaDry_),
     filmDeltaWet_(psf.filmDeltaWet_)
@@ -161,7 +161,7 @@ filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
         dict.lookupOrDefault<word>("pyrolysisRegion", "pyrolysisProperties")
     ),
     TnbrName_(dict.lookup("Tnbr")),
-    QrName_(dict.lookup("Qr")),
+    qrName_(dict.lookup("qr")),
     convectiveScaling_(dict.lookupOrDefault<scalar>("convectiveScaling", 1.0)),
     filmDeltaDry_(readScalar(dict.lookup("filmDeltaDry"))),
     filmDeltaWet_(readScalar(dict.lookup("filmDeltaWet")))
@@ -207,7 +207,7 @@ filmPyrolysisRadiativeCoupledMixedFvPatchScalarField
     filmRegionName_(psf.filmRegionName_),
     pyrolysisRegionName_(psf.pyrolysisRegionName_),
     TnbrName_(psf.TnbrName_),
-    QrName_(psf.QrName_),
+    qrName_(psf.qrName_),
     convectiveScaling_(psf.convectiveScaling_),
     filmDeltaDry_(psf.filmDeltaDry_),
     filmDeltaWet_(psf.filmDeltaWet_)
@@ -268,25 +268,25 @@ void filmPyrolysisRadiativeCoupledMixedFvPatchScalarField::updateCoeffs()
     const pyrolysisModelType& pyrolysis = pyrModel();
     const filmModelType& film = filmModel();
 
-    // Obtain Rad heat (Qr)
-    scalarField Qr(patch().size(), 0.0);
+    // Obtain Rad heat (qr)
+    scalarField qr(patch().size(), 0.0);
 
     label coupledPatchi = -1;
     if (pyrolysisRegionName_ == mesh.name())
     {
         coupledPatchi = patchi;
-        if (QrName_ != "none")
+        if (qrName_ != "none")
         {
-            Qr = nbrPatch.lookupPatchField<volScalarField, scalar>(QrName_);
-            mpp.distribute(Qr);
+            qr = nbrPatch.lookupPatchField<volScalarField, scalar>(qrName_);
+            mpp.distribute(qr);
         }
     }
     else if (pyrolysis.primaryMesh().name() == mesh.name())
     {
         coupledPatchi = nbrPatch.index();
-        if (QrName_ != "none")
+        if (qrName_ != "none")
         {
-            Qr = patch().lookupPatchField<volScalarField, scalar>(QrName_);
+            qr = patch().lookupPatchField<volScalarField, scalar>(qrName_);
         }
     }
     else
@@ -344,7 +344,7 @@ void filmPyrolysisRadiativeCoupledMixedFvPatchScalarField::updateCoeffs()
 
     scalarField qConv(ratio*htcwfilm*(Tfilm - Tp)*convectiveScaling_);
 
-    scalarField qRad((1.0 - ratio)*Qr);
+    scalarField qRad((1.0 - ratio)*qr);
 
     scalarField alpha(KDeltaNbr - (qRad + qConv)/Tp);
 
@@ -357,7 +357,7 @@ void filmPyrolysisRadiativeCoupledMixedFvPatchScalarField::updateCoeffs()
     if (debug)
     {
         scalar Qc = gSum(qConv*patch().magSf());
-        scalar Qr = gSum(qRad*patch().magSf());
+        scalar qr = gSum(qRad*patch().magSf());
         scalar Qt = gSum((qConv + qRad)*patch().magSf());
 
         Info<< mesh.name() << ':'
@@ -367,7 +367,7 @@ void filmPyrolysisRadiativeCoupledMixedFvPatchScalarField::updateCoeffs()
             << nbrPatch.name() << ':'
             << this->internalField().name() << " :" << nl
             << "     convective heat[W] : " << Qc << nl
-            << "     radiative heat [W] : " << Qr << nl
+            << "     radiative heat [W] : " << qr << nl
             << "     total heat     [W] : " << Qt << nl
             << "     wall temperature "
             << " min:" << gMin(*this)
@@ -399,7 +399,7 @@ void filmPyrolysisRadiativeCoupledMixedFvPatchScalarField::write
         pyrolysisRegionName_
     );
     os.writeKeyword("Tnbr")<< TnbrName_ << token::END_STATEMENT << nl;
-    os.writeKeyword("Qr")<< QrName_ << token::END_STATEMENT << nl;
+    os.writeKeyword("qr")<< qrName_ << token::END_STATEMENT << nl;
     os.writeKeyword("convectiveScaling") << convectiveScaling_
         << token::END_STATEMENT << nl;
     os.writeKeyword("filmDeltaDry") << filmDeltaDry_
diff --git a/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.H b/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.H
index 6375c32c86..8f04799d59 100644
--- a/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.H
+++ b/src/regionModels/regionCoupling/derivedFvPatchFields/filmPyrolysisRadiativeCoupledMixed/filmPyrolysisRadiativeCoupledMixedFvPatchScalarField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2013-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2013-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -35,7 +35,7 @@ Description
         type            filmPyrolysisRadiativeCoupledMixed;
         Tnbr            T;
         kappa           fluidThermo;
-        Qr              Qr;
+        qr              qr;
         kappaName       none;
         filmDeltaDry    0.0;
         filmDeltaWet    3e-4;
@@ -58,7 +58,7 @@ Description
 
     \verbatim
         qConv = ratio*htcwfilm*(Tfilm - *this);
-        qRad = (1.0 - ratio)*Qr;
+        qRad = (1.0 - ratio)*qr;
     \endverbatim
 
     Then the solid can gain or loose energy through radiation or conduction
@@ -67,7 +67,7 @@ Description
     Notes:
 
     - kappa and \c kappaName are inherited from temperatureCoupledBase.
-    - Qr is the radiative flux defined in the radiation model.
+    - qr is the radiative flux defined in the radiation model.
 
 
 See also
@@ -124,7 +124,7 @@ private:
         const word TnbrName_;
 
         //- Name of the radiative heat flux
-        const word QrName_;
+        const word qrName_;
 
         //- Convective Scaling Factor (as determined by Prateep's tests)
         const scalar convectiveScaling_;
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.C b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.C
index 0dcb6ebe9c..64c6be6118 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.C
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.C
@@ -56,11 +56,11 @@ constantRadiation::constantRadiation
 )
 :
     filmRadiationModel(typeName, film, dict),
-    QrConst_
+    qrConst_
     (
         IOobject
         (
-            typeName + ":QrConst",
+            typeName + ":qrConst",
             film.time().timeName(),
             film.regionMesh(),
             IOobject::MUST_READ,
@@ -125,10 +125,10 @@ tmp<volScalarField> constantRadiation::Shs()
     if ((time >= timeStart_) && (time <= timeStart_ + duration_))
     {
         scalarField& Shs = tShs.ref();
-        const scalarField& Qr = QrConst_;
+        const scalarField& qr = qrConst_;
         const scalarField& alpha = filmModel_.alpha();
 
-        Shs = mask_*Qr*alpha*absorptivity_;
+        Shs = mask_*qr*alpha*absorptivity_;
     }
 
     return tShs;
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.H b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.H
index 76a2d9a771..f33dc1dbe8 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.H
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/constantRadiation/constantRadiation.H
@@ -63,7 +63,7 @@ private:
     // Private data
 
         //- Constant radiative flux [kg/s3]
-        volScalarField QrConst_;
+        volScalarField qrConst_;
 
         //- Radiation mask
         volScalarField mask_;
@@ -115,7 +115,7 @@ public:
             virtual void correct();
 
             //- Return the radiation sensible enthalpy source
-            //  Also updates QrNet
+            //  Also updates qrNet
             virtual tmp<volScalarField> Shs();
 };
 
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/primaryRadiation/primaryRadiation.H b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/primaryRadiation/primaryRadiation.H
index 55f9d1a828..d2b9da585c 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/primaryRadiation/primaryRadiation.H
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/primaryRadiation/primaryRadiation.H
@@ -101,7 +101,7 @@ public:
             virtual void correct();
 
             //- Return the radiation sensible enthalpy source
-            //  Also updates QrNet
+            //  Also updates qrNet
             virtual tmp<volScalarField> Shs();
 };
 
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.C b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.C
index 0c82cf5e33..f333752847 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.C
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.C
@@ -71,11 +71,11 @@ standardRadiation::standardRadiation
         dimensionedScalar("zero", dimMass/pow3(dimTime), 0.0),
         film.mappedPushedFieldPatchTypes<scalar>()
     ),
-    QrNet_
+    qrNet_
     (
         IOobject
         (
-            "QrNet",
+            "qrNet",
             film.time().timeName(),
             film.regionMesh(),
             IOobject::NO_READ,
@@ -100,7 +100,7 @@ standardRadiation::~standardRadiation()
 
 void standardRadiation::correct()
 {
-    // Transfer Qr from primary region
+    // Transfer qr from primary region
     QinPrimary_.correctBoundaryConditions();
 }
 
@@ -131,9 +131,9 @@ tmp<volScalarField> standardRadiation::Shs()
 
     Shs = beta_*QinP*alpha*(1.0 - exp(-kappaBar_*delta));
 
-    // Update net Qr on local region
-    QrNet_.primitiveFieldRef() = QinP - Shs;
-    QrNet_.correctBoundaryConditions();
+    // Update net qr on local region
+    qrNet_.primitiveFieldRef() = QinP - Shs;
+    qrNet_.correctBoundaryConditions();
 
     return tShs;
 }
diff --git a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.H b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.H
index 8a4912bd52..191f1dab9d 100644
--- a/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.H
+++ b/src/regionModels/surfaceFilmModels/submodels/thermo/filmRadiationModel/standardRadiation/standardRadiation.H
@@ -63,7 +63,7 @@ private:
         volScalarField QinPrimary_;
 
         //- Remaining radiative flux after removing local contribution
-        volScalarField QrNet_;
+        volScalarField qrNet_;
 
 
         // Model coefficients
@@ -112,7 +112,7 @@ public:
             virtual void correct();
 
             //- Return the radiation sensible enthalpy source
-            //  Also updates QrNet
+            //  Also updates qrNet
             virtual tmp<volScalarField> Shs();
 };
 
diff --git a/src/regionModels/thermalBaffleModels/derivedFvPatchFields/thermalBaffle/thermalBaffleFvPatchScalarField.H b/src/regionModels/thermalBaffleModels/derivedFvPatchFields/thermalBaffle/thermalBaffleFvPatchScalarField.H
index b29bab13a4..bc8bcf848d 100644
--- a/src/regionModels/thermalBaffleModels/derivedFvPatchFields/thermalBaffle/thermalBaffleFvPatchScalarField.H
+++ b/src/regionModels/thermalBaffleModels/derivedFvPatchFields/thermalBaffle/thermalBaffleFvPatchScalarField.H
@@ -54,8 +54,8 @@ Usage
         Tnbr               T;
         kappa              fluidThermo; // or solidThermo
         KappaName          none;
-        QrNbr              Qr;//or none.Name of Qr field on neighbourregion
-        Qr                 none;// or none.Name of Qr field on localregion
+        qrNbr              qr;//or none.Name of qr field on neighbourregion
+        qr                 none;// or none.Name of qr field on localregion
         value              uniform 300;
 
         // Baffle region name
diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
index cd4d4827d2..f5723b6e29 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -185,7 +185,7 @@ updateCoeffs()
 
     const scalarField nAve(n & ray.dAve());
 
-    ray.Qr().boundaryFieldRef()[patchi] += Iw*nAve;
+    ray.qr().boundaryFieldRef()[patchi] += Iw*nAve;
 
     const scalarField temissivity = emissivity();
 
diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.C
index 591d6d1964..70110f20e3 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -40,7 +40,7 @@ greyDiffusiveViewFactorFixedValueFvPatchScalarField
 :
     fixedValueFvPatchScalarField(p, iF),
     radiationCoupledBase(patch(), "undefined", scalarField::null()),
-    Qro_(p.size(), 0.0)
+    qro_(p.size(), 0.0)
 {}
 
 
@@ -60,7 +60,7 @@ greyDiffusiveViewFactorFixedValueFvPatchScalarField
         ptf.emissivityMethod(),
         ptf.emissivity_
     ),
-    Qro_(ptf.Qro_)
+    qro_(ptf.qro_)
 {}
 
 
@@ -74,7 +74,7 @@ greyDiffusiveViewFactorFixedValueFvPatchScalarField
 :
     fixedValueFvPatchScalarField(p, iF, dict, false),
     radiationCoupledBase(p, dict),
-    Qro_("Qro", dict, p.size())
+    qro_("qro", dict, p.size())
 {
     if (dict.found("value"))
     {
@@ -104,7 +104,7 @@ greyDiffusiveViewFactorFixedValueFvPatchScalarField
         ptf.emissivityMethod(),
         ptf.emissivity_
     ),
-    Qro_(ptf.Qro_)
+    qro_(ptf.qro_)
 {}
 
 
@@ -122,7 +122,7 @@ greyDiffusiveViewFactorFixedValueFvPatchScalarField
         ptf.emissivityMethod(),
         ptf.emissivity_
     ),
-    Qro_(ptf.Qro_)
+    qro_(ptf.qro_)
 {}
 
 
@@ -163,7 +163,7 @@ write
 {
     fixedValueFvPatchScalarField::write(os);
     radiationCoupledBase::write(os);
-    Qro_.writeEntry("Qro", os);
+    qro_.writeEntry("qro", os);
 }
 
 
diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.H b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.H
index 7a5085c951..ea5cbac622 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.H
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveViewFactor/greyDiffusiveViewFactorFixedValueFvPatchScalarField.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -29,12 +29,12 @@ Group
 
 Description
     This boundary condition provides a grey-diffuse condition for radiative
-    heat flux, \c Qr, for use with the view factor model
+    heat flux, \c qr, for use with the view factor model
 
 Usage
     \table
         Property     | Description             | Required    | Default value
-        Qro          | external radiative heat flux | yes    |
+        qro          | external radiative heat flux | yes    |
         emissivityMode | emissivity mode: solidRadiation or lookup | yes |
     \endtable
 
@@ -43,7 +43,7 @@ Usage
     <patchName>
     {
         type            greyDiffusiveRadiationViewFactor;
-        Qro             uniform 0;
+        qro             uniform 0;
         emissivityMode  solidRadiation;
         value           uniform 0;
     }
@@ -85,7 +85,7 @@ class greyDiffusiveViewFactorFixedValueFvPatchScalarField
     // Private data
 
         //- External radiative heat flux
-        scalarField Qro_;
+        scalarField qro_;
 
 
 public:
@@ -165,9 +165,9 @@ public:
         // Access
 
             //- Return external radiative heat flux
-            const scalarList& Qro()
+            const scalarList& qro()
             {
-                return Qro_;
+                return qro_;
             }
 
 
diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C
index d77a56a845..21654e1542 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -186,7 +186,7 @@ updateCoeffs()
 
     const scalarField nAve(n & ray.dAve());
 
-    ray.Qr().boundaryFieldRef()[patchi] += Iw*nAve;
+    ray.qr().boundaryFieldRef()[patchi] += Iw*nAve;
 
     const scalarField Eb
     (
diff --git a/src/thermophysicalModels/radiation/radiationModels/P1/P1.C b/src/thermophysicalModels/radiation/radiationModels/P1/P1.C
index 3032cca499..edb306e321 100644
--- a/src/thermophysicalModels/radiation/radiationModels/P1/P1.C
+++ b/src/thermophysicalModels/radiation/radiationModels/P1/P1.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -62,18 +62,18 @@ Foam::radiation::P1::P1(const volScalarField& T)
         ),
         mesh_
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             mesh_.time().timeName(),
             mesh_,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),
         mesh_,
-        dimensionedScalar("Qr", dimMass/pow3(dimTime), 0.0)
+        dimensionedScalar("qr", dimMass/pow3(dimTime), 0.0)
     ),
     a_
     (
@@ -132,18 +132,18 @@ Foam::radiation::P1::P1(const dictionary& dict, const volScalarField& T)
         ),
         mesh_
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             mesh_.time().timeName(),
             mesh_,
             IOobject::NO_READ,
             IOobject::AUTO_WRITE
         ),
         mesh_,
-        dimensionedScalar("Qr", dimMass/pow3(dimTime), 0.0)
+        dimensionedScalar("qr", dimMass/pow3(dimTime), 0.0)
     ),
     a_
     (
@@ -242,14 +242,14 @@ void Foam::radiation::P1::calculate()
       - 4.0*(e_*physicoChemical::sigma*pow4(T_) ) - E_
     );
 
-    volScalarField::Boundary& QrBf = Qr_.boundaryFieldRef();
+    volScalarField::Boundary& qrBf = qr_.boundaryFieldRef();
 
     // Calculate radiative heat flux on boundaries.
     forAll(mesh_.boundaryMesh(), patchi)
     {
         if (!G_.boundaryField()[patchi].coupled())
         {
-            QrBf[patchi] =
+            qrBf[patchi] =
                 -gamma.boundaryField()[patchi]
                 *G_.boundaryField()[patchi].snGrad();
         }
diff --git a/src/thermophysicalModels/radiation/radiationModels/P1/P1.H b/src/thermophysicalModels/radiation/radiationModels/P1/P1.H
index 38cdd4fcfa..b4a5044a11 100644
--- a/src/thermophysicalModels/radiation/radiationModels/P1/P1.H
+++ b/src/thermophysicalModels/radiation/radiationModels/P1/P1.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -65,7 +65,7 @@ class P1
         volScalarField G_;
 
         //- Total radiative heat flux [W/m2]
-        volScalarField Qr_;
+        volScalarField qr_;
 
         //- Absorption coefficient
         volScalarField a_;
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C
index 164534ff57..01db9565a3 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -222,18 +222,18 @@ Foam::radiation::fvDOM::fvDOM(const volScalarField& T)
         mesh_,
         dimensionedScalar("G", dimMass/pow3(dimTime), 0.0)
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             mesh_.time().timeName(),
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::AUTO_WRITE
         ),
         mesh_,
-        dimensionedScalar("Qr", dimMass/pow3(dimTime), 0.0)
+        dimensionedScalar("qr", dimMass/pow3(dimTime), 0.0)
     ),
     Qem_
     (
@@ -309,18 +309,18 @@ Foam::radiation::fvDOM::fvDOM
         mesh_,
         dimensionedScalar("G", dimMass/pow3(dimTime), 0.0)
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             mesh_.time().timeName(),
             mesh_,
             IOobject::READ_IF_PRESENT,
             IOobject::AUTO_WRITE
         ),
         mesh_,
-        dimensionedScalar("Qr", dimMass/pow3(dimTime), 0.0)
+        dimensionedScalar("qr", dimMass/pow3(dimTime), 0.0)
     ),
     Qem_
     (
@@ -490,7 +490,7 @@ void Foam::radiation::fvDOM::updateBlackBodyEmission()
 void Foam::radiation::fvDOM::updateG()
 {
     G_ = dimensionedScalar("zero",dimMass/pow3(dimTime), 0.0);
-    Qr_ = dimensionedScalar("zero",dimMass/pow3(dimTime), 0.0);
+    qr_ = dimensionedScalar("zero",dimMass/pow3(dimTime), 0.0);
     Qem_ = dimensionedScalar("zero", dimMass/pow3(dimTime), 0.0);
     Qin_ = dimensionedScalar("zero", dimMass/pow3(dimTime), 0.0);
 
@@ -498,7 +498,7 @@ void Foam::radiation::fvDOM::updateG()
     {
         IRay_[rayI].addIntensity();
         G_ += IRay_[rayI].I()*IRay_[rayI].omega();
-        Qr_.boundaryFieldRef() += IRay_[rayI].Qr().boundaryField();
+        qr_.boundaryFieldRef() += IRay_[rayI].qr().boundaryField();
         Qem_.boundaryFieldRef() += IRay_[rayI].Qem().boundaryField();
         Qin_.boundaryFieldRef() += IRay_[rayI].Qin().boundaryField();
     }
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H
index 1154b6cafc..ed853850e7 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -89,7 +89,7 @@ class fvDOM
         volScalarField G_;
 
         //- Total radiative heat flux [W/m2]
-        volScalarField Qr_;
+        volScalarField qr_;
 
          //- Emmited radiative heat flux [W/m2]
         volScalarField Qem_;
@@ -228,7 +228,7 @@ public:
             inline const volScalarField& G() const;
 
             //- Const access to total radiative heat flux field
-            inline const volScalarField& Qr() const;
+            inline const volScalarField& qr() const;
 
             //- Const access to incident radiative heat flux field
             inline const volScalarField& Qin() const;
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOMI.H b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOMI.H
index d2255b2de0..6197b88e13 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOMI.H
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOMI.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -86,9 +86,9 @@ inline const Foam::volScalarField& Foam::radiation::fvDOM::G() const
 }
 
 
-inline const Foam::volScalarField& Foam::radiation::fvDOM::Qr() const
+inline const Foam::volScalarField& Foam::radiation::fvDOM::qr() const
 {
-    return Qr_;
+    return qr_;
 }
 
 inline const Foam::volScalarField& Foam::radiation::fvDOM::Qin() const
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.C b/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.C
index d776541384..2efa48026d 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.C
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -69,18 +69,18 @@ Foam::radiation::radiativeIntensityRay::radiativeIntensityRay
         mesh_,
         dimensionedScalar("I", dimMass/pow3(dimTime), 0.0)
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr" + name(rayId),
+            "qr" + name(rayId),
             mesh_.time().timeName(),
             mesh_,
             IOobject::NO_READ,
             IOobject::NO_WRITE
         ),
         mesh_,
-        dimensionedScalar("Qr", dimMass/pow3(dimTime), 0.0)
+        dimensionedScalar("qr", dimMass/pow3(dimTime), 0.0)
     ),
     Qin_
     (
@@ -206,7 +206,7 @@ Foam::radiation::radiativeIntensityRay::~radiativeIntensityRay()
 Foam::scalar Foam::radiation::radiativeIntensityRay::correct()
 {
     // Reset boundary heat flux to zero
-    Qr_.boundaryFieldRef() = 0.0;
+    qr_.boundaryFieldRef() = 0.0;
 
     scalar maxResidual = -GREAT;
 
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.H b/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.H
index e98081378e..2dc4eb4113 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.H
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRay.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -80,7 +80,7 @@ private:
         volScalarField I_;
 
         //- Total radiative heat flux on boundary
-        volScalarField Qr_;
+        volScalarField qr_;
 
         //- Incident radiative heat flux on boundary
         volScalarField Qin_;
@@ -176,10 +176,10 @@ public:
             inline const volScalarField& I() const;
 
             //- Return const access to the boundary heat flux
-            inline const volScalarField& Qr() const;
+            inline const volScalarField& qr() const;
 
             //- Return non-const access to the boundary heat flux
-            inline volScalarField& Qr();
+            inline volScalarField& qr();
 
             //- Return non-const access to the boundary incident heat flux
             inline volScalarField& Qin();
diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRayI.H b/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRayI.H
index 8761f900b4..d307d890bc 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRayI.H
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/radiativeIntensityRay/radiativeIntensityRayI.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -31,15 +31,15 @@ Foam::radiation::radiativeIntensityRay::I() const
 
 
 inline const Foam::volScalarField&
-Foam::radiation::radiativeIntensityRay::Qr() const
+Foam::radiation::radiativeIntensityRay::qr() const
 {
-    return Qr_;
+    return qr_;
 }
 
 
-inline Foam::volScalarField& Foam::radiation::radiativeIntensityRay::Qr()
+inline Foam::volScalarField& Foam::radiation::radiativeIntensityRay::qr()
 {
-    return Qr_;
+    return qr_;
 }
 
 inline const Foam::volScalarField& Foam::radiation::
diff --git a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C
index d768cd3942..47e7e2fadf 100644
--- a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C
+++ b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -49,17 +49,17 @@ namespace Foam
 void Foam::radiation::viewFactor::initialise()
 {
     const polyBoundaryMesh& coarsePatches = coarseMesh_.boundaryMesh();
-    const volScalarField::Boundary& Qrp = Qr_.boundaryField();
+    const volScalarField::Boundary& qrp = qr_.boundaryField();
 
     label count = 0;
-    forAll(Qrp, patchi)
+    forAll(qrp, patchi)
     {
         //const polyPatch& pp = mesh_.boundaryMesh()[patchi];
-        const fvPatchScalarField& QrPatchi = Qrp[patchi];
+        const fvPatchScalarField& qrPatchi = qrp[patchi];
 
-        if ((isA<fixedValueFvPatchScalarField>(QrPatchi)))
+        if ((isA<fixedValueFvPatchScalarField>(qrPatchi)))
         {
-            selectedPatches_[count] = QrPatchi.patch().index();
+            selectedPatches_[count] = qrPatchi.patch().index();
             nLocalCoarseFaces_ += coarsePatches[patchi].size();
             count++;
         }
@@ -264,11 +264,11 @@ Foam::radiation::viewFactor::viewFactor(const volScalarField& T)
         mesh_,
         finalAgglom_
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             mesh_.time().timeName(),
             mesh_,
             IOobject::MUST_READ,
@@ -322,11 +322,11 @@ Foam::radiation::viewFactor::viewFactor
         mesh_,
         finalAgglom_
     ),
-    Qr_
+    qr_
     (
         IOobject
         (
-            "Qr",
+            "qr",
             mesh_.time().timeName(),
             mesh_,
             IOobject::MUST_READ,
@@ -394,7 +394,7 @@ void Foam::radiation::viewFactor::insertMatrixElements
 void Foam::radiation::viewFactor::calculate()
 {
     // Store previous iteration
-    Qr_.storePrevIter();
+    qr_.storePrevIter();
 
     scalarField compactCoarseT(map_->constructSize(), 0.0);
     scalarField compactCoarseE(map_->constructSize(), 0.0);
@@ -407,7 +407,7 @@ void Foam::radiation::viewFactor::calculate()
     DynamicList<scalar> localCoarseEave(nLocalCoarseFaces_);
     DynamicList<scalar> localCoarseHoave(nLocalCoarseFaces_);
 
-    volScalarField::Boundary& QrBf = Qr_.boundaryFieldRef();
+    volScalarField::Boundary& qrBf = qr_.boundaryFieldRef();
 
     forAll(selectedPatches_, i)
     {
@@ -416,17 +416,17 @@ void Foam::radiation::viewFactor::calculate()
         const scalarField& Tp = T_.boundaryField()[patchID];
         const scalarField& sf = mesh_.magSf().boundaryField()[patchID];
 
-        fvPatchScalarField& QrPatch = QrBf[patchID];
+        fvPatchScalarField& qrPatch = qrBf[patchID];
 
-        greyDiffusiveViewFactorFixedValueFvPatchScalarField& Qrp =
+        greyDiffusiveViewFactorFixedValueFvPatchScalarField& qrp =
             refCast
             <
                 greyDiffusiveViewFactorFixedValueFvPatchScalarField
-            >(QrPatch);
+            >(qrPatch);
 
-        const scalarList eb = Qrp.emissivity();
+        const scalarList eb = qrp.emissivity();
 
-        const scalarList& Hoi = Qrp.Qro();
+        const scalarList& Hoi = qrp.qro();
 
         const polyPatch& pp = coarseMesh_.boundaryMesh()[patchID];
         const labelList& coarsePatchFace = coarseMesh_.patchFaceMap()[patchID];
@@ -499,23 +499,23 @@ void Foam::radiation::viewFactor::calculate()
     // Create global size vectors
     scalarField T(totalNCoarseFaces_, 0.0);
     scalarField E(totalNCoarseFaces_, 0.0);
-    scalarField QrExt(totalNCoarseFaces_, 0.0);
+    scalarField qrExt(totalNCoarseFaces_, 0.0);
 
     // Fill lists from compact to global indexes.
     forAll(compactCoarseT, i)
     {
         T[compactGlobalIds[i]] = compactCoarseT[i];
         E[compactGlobalIds[i]] = compactCoarseE[i];
-        QrExt[compactGlobalIds[i]] = compactCoarseHo[i];
+        qrExt[compactGlobalIds[i]] = compactCoarseHo[i];
     }
 
     Pstream::listCombineGather(T, maxEqOp<scalar>());
     Pstream::listCombineGather(E, maxEqOp<scalar>());
-    Pstream::listCombineGather(QrExt, maxEqOp<scalar>());
+    Pstream::listCombineGather(qrExt, maxEqOp<scalar>());
 
     Pstream::listCombineScatter(T);
     Pstream::listCombineScatter(E);
-    Pstream::listCombineScatter(QrExt);
+    Pstream::listCombineScatter(qrExt);
 
     // Net radiation
     scalarField q(totalNCoarseFaces_, 0.0);
@@ -538,7 +538,7 @@ void Foam::radiation::viewFactor::calculate()
                     if (i==j)
                     {
                         C(i, j) = invEj - (invEj - 1.0)*Fmatrix_()(i, j);
-                        q[i] += (Fmatrix_()(i, j) - 1.0)*sigmaT4 - QrExt[j];
+                        q[i] += (Fmatrix_()(i, j) - 1.0)*sigmaT4 - qrExt[j];
                     }
                     else
                     {
@@ -594,7 +594,7 @@ void Foam::radiation::viewFactor::calculate()
 
                     if (i==j)
                     {
-                        q[i] += (Fmatrix_()(i, j) - 1.0)*sigmaT4  - QrExt[j];
+                        q[i] += (Fmatrix_()(i, j) - 1.0)*sigmaT4  - qrExt[j];
                     }
                     else
                     {
@@ -614,7 +614,7 @@ void Foam::radiation::viewFactor::calculate()
         }
     }
 
-    // Scatter q and fill Qr
+    // Scatter q and fill qr
     Pstream::listCombineScatter(q);
     Pstream::listCombineGather(q, maxEqOp<scalar>());
 
@@ -625,7 +625,7 @@ void Foam::radiation::viewFactor::calculate()
         const polyPatch& pp = mesh_.boundaryMesh()[patchID];
         if (pp.size() > 0)
         {
-            scalarField& Qrp = QrBf[patchID];
+            scalarField& qrp = qrBf[patchID];
             const scalarField& sf = mesh_.magSf().boundaryField()[patchID];
             const labelList& agglom = finalAgglom_[patchID];
             label nAgglom = max(agglom)+1;
@@ -646,8 +646,8 @@ void Foam::radiation::viewFactor::calculate()
                 {
                     label facei = fineFaces[k];
 
-                    Qrp[facei] = q[globalCoarse];
-                    heatFlux += Qrp[facei]*sf[facei];
+                    qrp[facei] = q[globalCoarse];
+                    heatFlux += qrp[facei]*sf[facei];
                 }
                 globCoarseId ++;
             }
@@ -656,11 +656,11 @@ void Foam::radiation::viewFactor::calculate()
 
     if (debug)
     {
-        forAll(QrBf, patchID)
+        forAll(qrBf, patchID)
         {
-            const scalarField& Qrp = QrBf[patchID];
+            const scalarField& qrp = qrBf[patchID];
             const scalarField& magSf = mesh_.magSf().boundaryField()[patchID];
-            scalar heatFlux = gSum(Qrp*magSf);
+            scalar heatFlux = gSum(qrp*magSf);
 
             InfoInFunction
                 << "Total heat transfer rate at patch: "
@@ -669,8 +669,8 @@ void Foam::radiation::viewFactor::calculate()
         }
     }
 
-    // Relax Qr if necessary
-    Qr_.relax();
+    // Relax qr if necessary
+    qr_.relax();
 }
 
 
diff --git a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.H b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.H
index 86d244339c..1b3c56e0ab 100644
--- a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.H
+++ b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactor.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -80,7 +80,7 @@ class viewFactor
         singleCellFvMesh coarseMesh_;
 
         //- Net radiative heat flux [W/m2]
-        volScalarField Qr_;
+        volScalarField qr_;
 
         //- View factor matrix
         autoPtr<scalarSquareMatrix> Fmatrix_;
@@ -168,7 +168,7 @@ public:
     // Access
 
         //- Const access to total radiative heat flux field
-        inline const volScalarField& Qr() const;
+        inline const volScalarField& qr() const;
 };
 
 
diff --git a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactorI.H b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactorI.H
index e45f9a8ba0..b03f886ab2 100644
--- a/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactorI.H
+++ b/src/thermophysicalModels/radiation/radiationModels/viewFactor/viewFactorI.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -23,11 +23,10 @@ License
 
 \*---------------------------------------------------------------------------*/
 
-inline const Foam::volScalarField& Foam::radiation::viewFactor::Qr() const
+inline const Foam::volScalarField& Foam::radiation::viewFactor::qr() const
 {
-    return Qr_;
+    return qr_;
 }
 
 
-
 // ************************************************************************* //
diff --git a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/T b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/T
index 6e4926f22c..bce2317b71 100644
--- a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/T
+++ b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/T
@@ -53,8 +53,8 @@ boundaryField
         filmRegion      filmRegion;
         Tnbr            T;
         kappaMethod     fluidThermo;
-        QrNbr           none;
-        Qr              Qr;
+        qrNbr           none;
+        qr              qr;
         filmDeltaDry    0.0;
         filmDeltaWet    2e-4;
         value           $internalField;
diff --git a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/T b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/T
index 6a25deb6ac..e7825bfa05 100644
--- a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/T
+++ b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/T
@@ -38,8 +38,8 @@ boundaryField
         filmRegion      filmRegion;
         Tnbr            T;
         kappaMethod     solidThermo;
-        QrNbr           Qr;
-        Qr              none;
+        qrNbr           qr;
+        qr              none;
         filmDeltaDry    0.0;
         filmDeltaWet    2e-4;
         value           uniform 298;
diff --git a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/Qr b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/qr
similarity index 94%
rename from tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/Qr
rename to tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/qr
index 688990cd48..b5677efa71 100644
--- a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/Qr
+++ b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/0/pyrolysisRegion/qr
@@ -11,7 +11,7 @@ FoamFile
     format      ascii;
     class       volScalarField;
     location    "0";
-    object      Qr;
+    object      qr;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -38,7 +38,7 @@ boundaryField
         sampleMode      nearestPatchFace;
         samplePatch     region0_to_pyrolysisRegion_coupledWall;
         offset          (0 0 0);
-        field       Qr; // this is the name of Qr field in region0
+        field       qr; // this is the name of qr field in region0
         setAverage      no;
         average         0;
         value           uniform 0;
diff --git a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/constant/pyrolysisZones b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/constant/pyrolysisZones
index d988145a1c..b240d80b88 100644
--- a/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/constant/pyrolysisZones
+++ b/tutorials/combustion/fireFoam/LES/flameSpreadWaterSuppressionPanel/constant/pyrolysisZones
@@ -28,9 +28,9 @@ pyrolysis
         filmCoupled     true;
 
         gasHSource      true;
-        QrHSource       false;
+        qrHSource       false;
 
-        radFluxName     Qr;
+        radFluxName     qr;
 
         moveMesh        false; // true;
         minimumDelta    1e-6;
diff --git a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/T b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/T
index da6eb73e6e..8a8763bd35 100644
--- a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/T
+++ b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/T
@@ -51,8 +51,8 @@ boundaryField
         type            compressible::turbulentTemperatureRadCoupledMixed;
         Tnbr            T;
         kappaMethod     fluidThermo;
-        QrNbr           none;
-        Qr              Qr;
+        qrNbr           none;
+        qr              qr;
         value           $internalField;
     }
 }
diff --git a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/T b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/T
index 386d3ff0bd..2d309bd1aa 100644
--- a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/T
+++ b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/T
@@ -42,8 +42,8 @@ boundaryField
         type            compressible::turbulentTemperatureRadCoupledMixed;
         Tnbr            T;
         kappaMethod     solidThermo;
-        QrNbr           Qr;
-        Qr              none;
+        qrNbr           qr;
+        qr              none;
         value           uniform 298.15;
     }
 
diff --git a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/Qr b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/qr
similarity index 96%
rename from tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/Qr
rename to tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/qr
index ad9baa1586..c1ca71db75 100644
--- a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/Qr
+++ b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/0/panelRegion/qr
@@ -11,7 +11,7 @@ FoamFile
     format      ascii;
     class       volScalarField;
     location    "0";
-    object      Qr;
+    object      qr;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -43,7 +43,7 @@ boundaryField
         sampleMode      nearestPatchFace;
         samplePatch     region0_to_panelRegion_fLeft_zone;
         offset          (0 0 0);
-        field       Qr;
+        field       qr;
         setAverage      no;
         average         0;
         value           uniform 0;
@@ -56,7 +56,7 @@ boundaryField
         sampleMode      nearestPatchFace;
         samplePatch     region0_to_panelRegion_fRight_zone;
         offset          (0 0 0);
-        field       Qr;
+        field       qr;
         setAverage      no;
         average         0;
         value           uniform 0;
diff --git a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/constant/pyrolysisZones b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/constant/pyrolysisZones
index 2c505a9ecb..8ab8cca290 100644
--- a/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/constant/pyrolysisZones
+++ b/tutorials/combustion/fireFoam/LES/oppositeBurningPanels/constant/pyrolysisZones
@@ -26,7 +26,7 @@ pyrolysis
     reactingOneDimCoeffs
     {
         gasHSource      false; //Energy source term due to pyrolysis gas
-        QrHSource       false; //Energy source term due in depht radiation
+        qrHSource       false; //Energy source term due in depht radiation
         minimumDelta    1e-12;
 
         reactionDeltaMin 1e-12;
diff --git a/tutorials/combustion/fireFoam/LES/smallPoolFire2D/constant/pyrolysisZones b/tutorials/combustion/fireFoam/LES/smallPoolFire2D/constant/pyrolysisZones
index d556e449ab..4cc5fcb097 100644
--- a/tutorials/combustion/fireFoam/LES/smallPoolFire2D/constant/pyrolysisZones
+++ b/tutorials/combustion/fireFoam/LES/smallPoolFire2D/constant/pyrolysisZones
@@ -25,7 +25,7 @@ pyrolysis
 
     reactingOneDimCoeffs
     {
-        radFluxName     Qr;
+        radFluxName     qr;
 
         minimumDelta    1e-8;
 
diff --git a/tutorials/combustion/fireFoam/LES/smallPoolFire3D/constant/pyrolysisZones b/tutorials/combustion/fireFoam/LES/smallPoolFire3D/constant/pyrolysisZones
index d556e449ab..4cc5fcb097 100644
--- a/tutorials/combustion/fireFoam/LES/smallPoolFire3D/constant/pyrolysisZones
+++ b/tutorials/combustion/fireFoam/LES/smallPoolFire3D/constant/pyrolysisZones
@@ -25,7 +25,7 @@ pyrolysis
 
     reactingOneDimCoeffs
     {
-        radFluxName     Qr;
+        radFluxName     qr;
 
         minimumDelta    1e-8;
 
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/0/Qr b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/0/qr
similarity index 98%
rename from tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/0/Qr
rename to tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/0/qr
index 12ee0f2fe9..b7ec516043 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/0/Qr
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/0/qr
@@ -10,7 +10,7 @@ FoamFile
     version     2.0;
     format      ascii;
     class       volScalarField;
-    object      Qr;
+    object      qr;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/Allrun.pre b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/Allrun.pre
index 22b2e59f12..e2f33a7785 100755
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/Allrun.pre
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/Allrun.pre
@@ -12,7 +12,7 @@ runApplication splitMeshRegions -cellZones -overwrite
 # remove fluid fields from solid regions (important for post-processing)
 for i in heater leftSolid rightSolid
 do
-   rm -f 0*/$i/{rho,nut,alphat,epsilon,k,U,p_rgh,Qr,G,IDefault}
+   rm -f 0*/$i/{rho,nut,alphat,epsilon,k,U,p_rgh,qr,G,IDefault}
 done
 
 for i in bottomAir topAir heater leftSolid rightSolid
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/changeDictionaryDict
index e49858a25b..7be44a3a52 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/changeDictionaryDict
@@ -54,8 +54,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     fluidThermo;
-            QrNbr           none;
-            Qr              Qr;
+            qrNbr           none;
+            qr              qr;
             value           uniform 300;
         }
     }
@@ -113,7 +113,7 @@ p
     }
 }
 
-Qr
+qr
 {
     internalField   uniform 0;
     boundaryField
@@ -122,7 +122,7 @@ Qr
         {
             type            greyDiffusiveRadiationViewFactor;
             emissivityMode  lookup;
-            Qro             uniform 0;
+            qro             uniform 0;
             emissivity      uniform 1.0;
             value           uniform 0;
         }
@@ -131,7 +131,7 @@ Qr
         {
             type            greyDiffusiveRadiationViewFactor;
             emissivityMode  solidRadiation;
-            Qro             uniform 0;
+            qro             uniform 0;
             value           uniform 0;
         }
     }
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/fvSolution b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/fvSolution
index 2f353374cd..e4ba12e773 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/fvSolution
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/bottomAir/fvSolution
@@ -74,7 +74,7 @@ relaxationFactors
         "(k|epsilon|omega)" 0.7;
         G               0.7;
         "ILambda.*"     0.7;
-        Qr              0.7;
+        qr              0.7;
     }
 }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/heater/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/heater/changeDictionaryDict
index d654d22371..d27d0cbf24 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/heater/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/heater/changeDictionaryDict
@@ -47,8 +47,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     solidThermo;
-            QrNbr           Qr;
-            Qr              none;
+            qrNbr           qr;
+            qr              none;
             value           uniform 300;
         }
 
@@ -57,8 +57,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     solidThermo;
-            QrNbr           Qr;
-            Qr              none;
+            qrNbr           qr;
+            qr              none;
             value           uniform 300;
         }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/leftSolid/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/leftSolid/changeDictionaryDict
index 8cda0f66e0..a22671d9cd 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/leftSolid/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/leftSolid/changeDictionaryDict
@@ -43,8 +43,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     solidThermo;
-            QrNbr           Qr;
-            Qr              none;
+            qrNbr           qr;
+            qr              none;
             value           uniform 300;
         }
 
@@ -53,8 +53,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     solidThermo;
-            QrNbr           Qr;
-            Qr              none;
+            qrNbr           qr;
+            qr              none;
             value           uniform 300;
         }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/rightSolid/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/rightSolid/changeDictionaryDict
index a6a455047c..039be56e01 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/rightSolid/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/rightSolid/changeDictionaryDict
@@ -43,8 +43,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     solidThermo;
-            QrNbr           Qr;
-            Qr              none;
+            qrNbr           qr;
+            qr              none;
             value           uniform 300;
         }
 
@@ -53,8 +53,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     solidThermo;
-            QrNbr           Qr;
-            Qr              none;
+            qrNbr           qr;
+            qr              none;
             value           uniform 300;
         }
 
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/changeDictionaryDict b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/changeDictionaryDict
index 81d906dbd9..81ef8f2f7e 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/changeDictionaryDict
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/changeDictionaryDict
@@ -65,8 +65,8 @@ T
             type            compressible::turbulentTemperatureRadCoupledMixed;
             Tnbr            T;
             kappaMethod     fluidThermo;
-            QrNbr           none;
-            Qr              Qr;
+            qrNbr           none;
+            qr              qr;
             value           uniform 300;
         }
     }
@@ -160,7 +160,7 @@ p
     }
 }
 
-Qr
+qr
 {
     internalField   uniform 0;
     boundaryField
@@ -169,7 +169,7 @@ Qr
         {
             type            greyDiffusiveRadiationViewFactor;
             emissivityMode  lookup;
-            Qro             uniform 0;
+            qro             uniform 0;
             emissivity      uniform 1.0;
             value           uniform 0;
         }
@@ -178,7 +178,7 @@ Qr
         {
             type            greyDiffusiveRadiationViewFactor;
             emissivityMode  solidRadiation;
-            Qro             uniform 0;
+            qro             uniform 0;
             value           uniform 0;
         }
     }
diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/fvSolution b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/fvSolution
index 2f353374cd..e4ba12e773 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/fvSolution
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/multiRegionHeaterRadiation/system/topAir/fvSolution
@@ -74,7 +74,7 @@ relaxationFactors
         "(k|epsilon|omega)" 0.7;
         G               0.7;
         "ILambda.*"     0.7;
-        Qr              0.7;
+        qr              0.7;
     }
 }