ENH: ReactingParcel - only apply surface correction if Bird correction is selected

src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -152,7 +152,7 @@ void Foam::ReactingParcel<ParcelType>::correctSurfaceValues
 )
 {
     // No correction if total concentration of emitted species is small
-    if (sum(Cs) < SMALL)
+    if (!td.cloud().heatTransfer().BirdCorrection() || (sum(Cs) < SMALL))
     {
         return;
     }