MPPICCloud: Added error indicating incompatibility of sub-models with moving meshes

MPPIC requires significant extension for damping and packing modelling
to work on moving meshes. At present the predictor-corrector process
used by these models does not maintain a consistent time-state relative
to a moving mesh. The cloud needs to enact the correction track from the
original starting point, rather than from the end of the non-corrected
track. This will require additional tracking or storage and
communication steps.

Resolves bug report https://bugs.openfoam.org/view.php?id=3318

src/lagrangian/intermediate/clouds/Templates/MPPICCloud/MPPICCloud.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2013-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2013-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -200,6 +200,13 @@ void Foam::MPPICCloud<CloudType>::motion
 
     if (dampingModel_->active())
     {
+        if (this->mesh().moving())
+        {
+            FatalErrorInFunction
+                << "MPPIC damping modelling does not support moving meshes."
+                << exit(FatalError);
+        }
+
         // update averages
         td.updateAverages(cloud);
 
@@ -224,6 +231,13 @@ void Foam::MPPICCloud<CloudType>::motion
 
     if (packingModel_->active())
     {
+        if (this->mesh().moving())
+        {
+            FatalErrorInFunction
+                << "MPPIC packing modelling does not support moving meshes."
+                << exit(FatalError);
+        }
+
         // same procedure as for damping
         td.updateAverages(cloud);
         packingModel_->cacheFields(true);