ENH: Adding fvOption constrain to scalarTransportFoam.

Changing to adjustableTimeStep the tutorial reactingTwoPhaseEulerFoam/laminar/bubbleColumnIATE

applications/solvers/basic/scalarTransportFoam/scalarTransportFoam.C

@@ -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) 2011-2016 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -82,7 +82,7 @@ int main(int argc, char *argv[])
 
         while (simple.correctNonOrthogonal())
         {
-            solve
+            fvScalarMatrix TEqn
             (
                 fvm::ddt(T)
               + fvm::div(phi, T)
@@ -90,6 +90,11 @@ int main(int argc, char *argv[])
              ==
                 fvOptions(T)
             );
+
+            fvOptions.constrain(TEqn);
+
+            TEqn.solve();
+
         }
 
         runTime.write();