fvOptions::limitTemperature: Simplify controls and make documentation consistent with the code

src/fvOptions/corrections/limitTemperature/limitTemperature.C

@@ -56,8 +56,8 @@ Foam::fv::limitTemperature::limitTemperature
 )
 :
     cellSetOption(name, modelType, dict, mesh),
-    Tmin_(readScalar(coeffs_.lookup("Tmin"))),
-    Tmax_(readScalar(coeffs_.lookup("Tmax")))
+    Tmin_(readScalar(coeffs_.lookup("min"))),
+    Tmax_(readScalar(coeffs_.lookup("max")))
 {
     // Set the field name to that of the energy field from which the temperature
     // is obtained
@@ -73,6 +73,22 @@ Foam::fv::limitTemperature::limitTemperature
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
+bool Foam::fv::limitTemperature::read(const dictionary& dict)
+{
+    if (cellSetOption::read(dict))
+    {
+        coeffs_.lookup("min") >> Tmin_;
+        coeffs_.lookup("max") >> Tmax_;
+
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+
 void Foam::fv::limitTemperature::correct(volScalarField& he)
 {
     const basicThermo& thermo =
@@ -122,20 +138,4 @@ void Foam::fv::limitTemperature::correct(volScalarField& he)
 }
 
 
-bool Foam::fv::limitTemperature::read(const dictionary& dict)
-{
-    if (cellSetOption::read(dict))
-    {
-        coeffs_.readIfPresent("Tmin", Tmin_);
-        coeffs_.readIfPresent("Tmax", Tmax_);
-
-        return true;
-    }
-    else
-    {
-        return false;
-    }
-}
-
-
 // ************************************************************************* //

src/fvOptions/corrections/limitTemperature/limitTemperature.H

@@ -26,15 +26,24 @@ Class
 
 Description
     Correction for temperature to apply limits between minimum and maximum
-    values
+    values.
 
-    Constraint described by:
+Usage
+    Example usage:
+    \verbatim
+    limitT
+    {
+        type            limitTemperature;
+        active          yes;
 
         limitTemperatureCoeffs
         {
-            minimum     200;
-            maximum     500;
+            selectionMode   all;
+            min             200;
+            max             500;
         }
+    }
+    \endverbatim
 
 SourceFiles
     limitTemperature.C
@@ -109,16 +118,11 @@ public:
 
     // Member Functions
 
-        // Evaluate
+        //- Read dictionary
+        virtual bool read(const dictionary& dict);
 
-            //- Correct the energy field
-            virtual void correct(volScalarField& he);
-
-
-        // IO
-
-            //- Read dictionary
-            virtual bool read(const dictionary& dict);
+        //- Correct the energy field
+        virtual void correct(volScalarField& he);
 };