solvers::solid: Support mesh motion

Mesh motion is now supported in solid regions, but with the restriction
that it must be a solid-body-type motion. The mesh must not deform; all
cell volumes and face area magnitudes must remain constant. An error
will be generated if a motion strategy is selected that does not obey
this constraint.

applications/solvers/modules/solid/solid.C

@@ -24,6 +24,7 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "solid.H"
+#include "fvMeshMover.H"
 #include "localEulerDdtScheme.H"
 #include "addToRunTimeSelectionTable.H"
 
@@ -161,7 +162,25 @@ void Foam::solvers::solid::preSolve()
 
 bool Foam::solvers::solid::moveMesh()
 {
-    return true;
+    if (pimple.firstIter() || pimple.moveMeshOuterCorrectors())
+    {
+        if (!mesh.mover().solidBody())
+        {
+            FatalErrorInFunction
+                << "Region " << name() << " of type " << type()
+                << " does not support non-solid body mesh motion"
+                << exit(FatalError);
+        }
+
+        mesh.move();
+
+        if (mesh.changing())
+        {
+            return mesh.moving();
+        }
+    }
+
+    return false;
 }