[adambarfi]

hi everybody,

I defined a new solver that solve natural convection in a viscoelastic Fluid. it made successfully, but when I want to run my model the following error was appeared:

--> FOAM FATAL ERROR:

     gradientInternalCoeffs cannot be called for a calculatedFvPatchField
     on patch floor of field p in file "/home/mostafa/OpenFOAM/mostafa-2.1.0/run/tutorials/viscoelastic/viscoelasticFluidFoam/Hasan_Giesekus/0/p"
     You are probably trying to solve for a field with a default boundary condition.
     From function calculatedFvPatchField<Type>::gradientInternalCoeffs() const
     in file fields/fvPatchFields/basic/calculated/calculatedFvPatchField.C at line 186.

  FOAM exiting

do anybody know where is the problem?

Thanks