ENH: Arrhenius viscocity model and energyTransport function-object

- Arrhenius viscocity model for incompressible viscocity.

- energyTransport FO for incompressible single and multiple phase
  flows and viscousDissipation fvOption source.

- Tutorial to show the use of energyTransport:
     multiphase/multiphaseInterFoam/laminar/mixerVessel2D

- Tutorial to show viscousDissipation:
     compressible/rhoPimpleFoam/RAS/TJunction

tutorials/compressible/rhoPimpleFoam/RAS/TJunction/constant/fvOptions

@@ -9,35 +9,14 @@ FoamFile
 {
     version     2.0;
     format      ascii;
-    class       volVectorField;
-    location    "0";
-    object      U;
+    class       dictionary;
+    location    "constant";
+    object      fvOptions;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-dimensions      [0 1 -1 0 0 0 0];
-
-internalField   uniform (0 0 0);
-
-boundaryField
+viscousDissipation
 {
-    rotor
-    {
-        type            noSlip;
-    }
-    stator
-    {
-        type            noSlip;
-    }
-    front
-    {
-        type            empty;
-    }
-    back
-    {
-        type            empty;
-    }
+    type            viscousDissipation;
+    enabled         true;
 }
-
-
 // ************************************************************************* //

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/0.orig/T

@@ -10,19 +10,20 @@ FoamFile
     version     2.0;
     format      ascii;
     class       volScalarField;
-    object      p_rgh;
+    object      T;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-dimensions      [1 -1 -2 0 0 0 0];
+dimensions      [0 0 0 1 0 0 0];
 
-internalField   uniform 0;
+internalField   uniform 300;
 
 boundaryField
 {
     rotor
     {
-        type            zeroGradient;
+        type            fixedValue;
+        value           uniform 305;
     }
 
     stator

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/Allclean

@@ -2,7 +2,6 @@
 cd ${0%/*} || exit 1                        # Run from this directory
 . $WM_PROJECT_DIR/bin/tools/CleanFunctions  # Tutorial clean functions
 
-cleanCase
-rm 0/alphas > /dev/null 2>&1
+cleanCase0
 
 #------------------------------------------------------------------------------

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/Allrun

@@ -3,6 +3,10 @@ cd ${0%/*} || exit 1                        # Run from this directory
 . $WM_PROJECT_DIR/bin/tools/RunFunctions    # Tutorial run functions
 
 runApplication ./makeMesh
+restore0Dir
+topoSet
+setFields
+setsToZones -noFlipMap
 runApplication $(getApplication)
 
 #------------------------------------------------------------------------------

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/makeMesh

@@ -5,4 +5,3 @@ blockMesh
 topoSet
 setsToZones -noFlipMap
 
-#------------------------------------------------------------------------------

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/system/controlDict

@@ -52,5 +52,62 @@ maxAlphaCo      0.5;
 
 maxDeltaT       1;
 
+functions
+{
+    sTransport
+    {
+        type            energyTransport;
+        libs            ("libsolverFunctionObjects.so");
 
+        enabled         true;
+        writeControl    outputTime;
+        writeInterval   1;
+
+        field           T;
+
+        rho             rho;
+        phi             rhoPhi;
+
+        write           true;
+
+        phaseThermos
+        {
+            alpha.air
+            {
+                Cp          1e3;
+                kappa       0.0243;
+            }
+            alpha.mercury
+            {
+                Cp          140;
+                kappa       8.2;
+            }
+            alpha.oil
+            {
+                Cp          2e3;
+                kappa       0.2;
+            }
+            alpha.water
+            {
+                Cp          4e3;
+                kappa       0.6;
+            }
+        }
+
+        fvOptions
+        {
+            viscousDissipation
+            {
+                type            viscousDissipation;
+                enabled         true;
+
+                viscousDissipationCoeffs
+                {
+                    fields          (T);
+                    rho             rho; //rho Field
+                }
+            }
+        }
+    }
+}
 // ************************************************************************* //

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/system/fvSchemes

@@ -31,6 +31,7 @@ divSchemes
     div(phi,alpha)  Gauss vanLeer;
     div(phirb,alpha) Gauss linear;
     div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
+    div(phi,T)      Gauss limitedLinear 1;
 }
 
 laplacianSchemes

tutorials/multiphase/multiphaseInterFoam/laminar/mixerVessel2D/system/fvSolution

@@ -48,7 +48,7 @@ solvers
         relTol          0;
     }
 
-    U
+    "(U|T)"
     {
         solver          smoothSolver;
         smoother        symGaussSeidel;
@@ -71,7 +71,7 @@ relaxationFactors
 {
     equations
     {
-        "U.*"           1;
+        ".*"           1;
     }
 }