improved conductivity tensor

src/coupled/problem/DeformedProblem.hpp

@@ -203,9 +203,11 @@ public:
 
   Tensor Conductivity(const Cell &c) const override {
     Tensor D = originalProblem->Conductivity(c);
-    Tensor F = One + transfer->Gradient(*displacement, c);
-    Tensor FInv = Invert(F);
-    return det(F) * FInv * D * transpose(FInv);
+    return D;
+// to be checked
+//    Tensor F = One + transfer->Gradient(*displacement, c);
+//    Tensor FInv = Invert(F);
+//    return det(F) * FInv * D * transpose(FInv);
   }
 
   void chamberSpecialization(const string &chamberName) const override {