BUG: mappedPatch: do not use sampleMesh. Fixes #1951.

The helper function sampleMesh returns a reference to
the sampled mesh. This will fail if that mesh
is on a different world.

src/TurbulenceModels/compressible/turbulentFluidThermoModels/derivedFvPatchFields/turbulentTemperatureCoupledBaffleMixed/turbulentTemperatureCoupledBaffleMixedFvPatchScalarField.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -118,16 +118,6 @@ turbulentTemperatureCoupledBaffleMixedFvPatchScalarField
     kappaLayers_(0),
     contactRes_(0.0)
 {
-    if (!isA<mappedPatchBase>(this->patch().patch()))
-    {
-        FatalErrorInFunction
-            << "' not type '" << mappedPatchBase::typeName << "'"
-            << "\n    for patch " << p.name()
-            << " of field " << internalField().name()
-            << " in file " << internalField().objectPath()
-            << exit(FatalError);
-    }
-
     if (dict.readIfPresent("thicknessLayers", thicknessLayers_))
     {
         dict.readEntry("kappaLayers", kappaLayers_);

src/meshTools/mappedPatches/mappedPolyPatch/mappedPatchBaseI.H

@@ -167,7 +167,9 @@ inline bool Foam::mappedPatchBase::sameRegion() const
 inline const Foam::mapDistribute& Foam::mappedPatchBase::map() const
 {
     const polyMesh& thisMesh = patch_.boundaryMesh().mesh();
-    bool topoChange = sampleMesh().topoChanging() || thisMesh.topoChanging();
+    bool topoChange =
+        (sameWorld() && sampleMesh().topoChanging())
+     || thisMesh.topoChanging();
 
     if (topoChange)
     {
@@ -189,7 +191,9 @@ inline const Foam::AMIPatchToPatchInterpolation& Foam::mappedPatchBase::AMI
 ) const
 {
     const polyMesh& thisMesh = patch_.boundaryMesh().mesh();
-    bool topoChange = sampleMesh().topoChanging() || thisMesh.topoChanging();
+    bool topoChange =
+        (sameWorld() && sampleMesh().topoChanging())
+     || thisMesh.topoChanging();
 
     if (topoChange || forceUpdate)
     {

tutorials/multiphase/compressibleInterFoam/laminar/waterCooler/solid/system/fvSolution

@@ -17,7 +17,7 @@ FoamFile
 
 solvers
 {
-    h
+    "h.*"
     {
         solver          PCG;
         preconditioner  DIC;