BUG: fan b.c. was using phi on slave side.

src/finiteVolume/fields/fvPatchFields/constraint/cyclic/cyclicFvPatchField.C

@@ -171,6 +171,23 @@ tmp<Field<Type> > cyclicFvPatchField<Type>::patchNeighbourField() const
 }
 
 
+template<class Type>
+const cyclicFvPatchField<Type>& cyclicFvPatchField<Type>::neighbourPatchField()
+const
+{
+    const GeometricField<Type, fvPatchField, volMesh>& fld =
+    static_cast<const GeometricField<Type, fvPatchField, volMesh>&>
+    (
+        this->internalField()
+    );
+
+    return refCast<const cyclicFvPatchField<Type> >
+    (
+        fld.boundaryField()[this->cyclicPatch().neighbPatchID()]
+    );
+}
+
+
 template<class Type>
 void cyclicFvPatchField<Type>::updateInterfaceMatrix
 (

src/finiteVolume/fields/fvPatchFields/constraint/cyclic/cyclicFvPatchField.H

@@ -150,9 +150,12 @@ public:
 
         // Evaluation functions
 
-            //- Return neighbour coupled given internal cell data
+            //- Return neighbour coupled internal cell data
             tmp<Field<Type> > patchNeighbourField() const;
 
+            //- Return reference to neighbour patchField
+            const cyclicFvPatchField<Type>& neighbourPatchField() const;
+
             //- Update result field based on interface functionality
             virtual void updateInterfaceMatrix
             (

src/finiteVolume/fields/fvPatchFields/derived/fan/fanFvPatchField.H

@@ -140,7 +140,17 @@ public:
             //- Return the "jump" across the patch.
             virtual tmp<Field<Type> > jump() const
             {
-                return jump_;
+                if (this->cyclicPatch().owner())
+                {
+                    return jump_;
+                }
+                else
+                {
+                    return refCast<const fanFvPatchField<Type> >
+                    (
+                        this->neighbourPatchField()
+                    ).jump();
+                }
             }