an error??
 

:confused::confused:when I run a solver which was writen by myself,an error like follows:
--> FOAM FATAL ERROR:
gradientInternalCoeffs cannot be called for a calculatedFvPatchField
on patch movingWall of field Y1 in file "/home/cfd/OpenFOAM/cfd-2.1.0/run/tutorials/incompressible/rkcpFoam/cavity/0/Y1"
You are probably trying to solve for a field with a default boundary condition.
From function calculatedFvPatchField<Type>::gradientInternalCoef fs() const
in file fields/fvPatchFields/basic/calculated/calculatedFvPatchField.C at line 186.
FOAM exiting
how can I handle it?

thank you!!