fvcSmooth: updated documentation

src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C

@@ -255,8 +255,7 @@ void Foam::fvc::sweep
             changedFaces.append(facei);
             changedFacesInfo.append
             (
-                sweepData(max(field[own], field[nbr]),
+                sweepData(max(field[own], field[nbr]), Cf[facei])
-                Cf[facei])
             );
         }
     }

src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H

@@ -21,12 +21,22 @@ License
     You should have received a copy of the GNU General Public License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
-function
+InNamespace
-    Foam::fvc::smooth
+    Foam::fvc
 
 Description
-    Function that uses smoothData to apply spatial smoothing of a
+    Provides functions smooth spread and sweep which use the FaceCellWave
-    volume field using the FaceCellWave algorithm
+    algorithm to smooth and redistribute the first field argument.
+
+    smooth: smooths the field by ensuring the values in neighbouring
+            cells are at least coeff* the cell value.
+
+    spread: redistributes the field by spreading the maximum value within
+            the region defined by the value and gradient of alpha.
+
+    sweep: redistributes the field by sweeping the maximum value where the
+           gradient of alpha is large away from that starting point of the
+           sweep.
 
 SourceFiles
     fvcSmooth.C

src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H

@@ -25,9 +25,9 @@ Class
     Foam::smoothData
 
 Description
-    Helper class used by the smoothVolField class
+    Helper class used by the fvc::smooth and fvc::spread functions.
 
-Files
+SourceFiles
     smoothData.H
     smoothDataI.H
 

src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H

@@ -25,9 +25,9 @@ Class
     Foam::sweepData
 
 Description
-    Helper class used by fvcSmooth
+    Helper class used by fvc::sweep function.
 
-Files
+SourceFiles
     sweepData.H
     sweepDataI.H