diff --git a/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C b/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
index b3ddd44ff2..1e0ec17021 100644
--- a/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
+++ b/applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/frictionalStressModel/Schaeffer/SchaefferFrictionalStress.C
@@ -123,13 +123,13 @@ Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::muf
         )
     );
 
-    volScalarField& muf_ = tmuf();
+    volScalarField& muff = tmuf();
 
     forAll (D, celli)
     {
         if (alpha[celli] > alphaMax.value()-5e-2)
         {
-            muf_[celli] =
+            muff[celli] =
                 0.5*pf[celli]*sin(phi.value())
                /(
                     sqrt(1.0/6.0*(sqr(D[celli].xx() - D[celli].yy())
@@ -141,7 +141,7 @@ Foam::tmp<Foam::volScalarField> Foam::SchaefferFrictionalStress::muf
         }
     }
 
-    return muf_;
+    return tmuf;
 }
 
 
diff --git a/src/transportModels/incompressible/viscosityModels/HerschelBulkley/HerschelBulkley.C b/src/transportModels/incompressible/viscosityModels/HerschelBulkley/HerschelBulkley.C
old mode 100755
new mode 100644
diff --git a/src/transportModels/incompressible/viscosityModels/HerschelBulkley/HerschelBulkley.H b/src/transportModels/incompressible/viscosityModels/HerschelBulkley/HerschelBulkley.H
old mode 100755
new mode 100644
diff --git a/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.C b/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.C
old mode 100755
new mode 100644
index 0155aaca31..a735465a93
--- a/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.C
+++ b/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.C
@@ -51,9 +51,23 @@ namespace viscosityModels
 Foam::tmp<Foam::volScalarField>
 Foam::viscosityModels::powerLaw::calcNu() const
 {
-    dimensionedScalar tone("tone", dimTime, 1.0);
-    return (max(numin_, min(numax_, k_
-        * pow(tone * strainRate(), n_.value()- scalar(1.0)))));
+    return max
+    (
+        nuMin_,
+        min
+        (
+            nuMax_,
+            k_*pow
+            (
+                max
+                (
+                    dimensionedScalar("one", dimTime, 1.0)*strainRate(),
+                    dimensionedScalar("VSMALL", dimless, VSMALL)
+                ),
+                n_.value() - scalar(1.0)
+            )
+        )
+    );
 }
 
 
@@ -71,8 +85,8 @@ Foam::viscosityModels::powerLaw::powerLaw
     powerLawCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
     k_(powerLawCoeffs_.lookup("k")),
     n_(powerLawCoeffs_.lookup("n")),
-    numin_(powerLawCoeffs_.lookup("numin")),
-    numax_(powerLawCoeffs_.lookup("numax")),
+    nuMin_(powerLawCoeffs_.lookup("nuMin")),
+    nuMax_(powerLawCoeffs_.lookup("nuMax")),
     nu_
     (
         IOobject
@@ -101,8 +115,8 @@ bool Foam::viscosityModels::powerLaw::read
 
     powerLawCoeffs_.lookup("k") >> k_;
     powerLawCoeffs_.lookup("n") >> n_;
-    powerLawCoeffs_.lookup("numin") >> numin_;
-    powerLawCoeffs_.lookup("numax") >> numax_;
+    powerLawCoeffs_.lookup("nuMin") >> nuMin_;
+    powerLawCoeffs_.lookup("nuMax") >> nuMax_;
 
     return true;
 }
diff --git a/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.H b/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.H
old mode 100755
new mode 100644
index 10a49fc8c4..f32fb749be
--- a/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.H
+++ b/src/transportModels/incompressible/viscosityModels/powerLaw/powerLaw.H
@@ -61,8 +61,8 @@ class powerLaw
 
         dimensionedScalar k_;
         dimensionedScalar n_;
-        dimensionedScalar numin_;
-        dimensionedScalar numax_;
+        dimensionedScalar nuMin_;
+        dimensionedScalar nuMax_;
 
         volScalarField nu_;