simpleFoam: Construct a turbulenceModel rather than RASModel

to support laminar simulations in the new framework.

Unfortunately this allows LES models to be instantiated although they
are not compatible with steady-state simulations.

applications/solvers/incompressible/simpleFoam/createFields.H

@@ -33,9 +33,10 @@
     scalar pRefValue = 0.0;
     setRefCell(p, simple.dict(), pRefCell, pRefValue);
 
+
     singlePhaseTransportModel laminarTransport(U, phi);
 
-    autoPtr<incompressible::RASModel> turbulence
+    autoPtr<incompressible::turbulenceModel> turbulence
     (
-        incompressible::RASModel::New(U, phi, laminarTransport)
+        incompressible::turbulenceModel::New(U, phi, laminarTransport)
     );