[MarcelloAsciolla]

I created a rotating domain around a fan and I am trying to launch a simulation with a stage mixing plane, but I get this kind of error on the interface.

ERROR #001100279 has occurred in subroutine ErrAction.
Message:
****** FATAL ERROR ****** The orthographic view transformation fa-
iled on domain interface "Interfaccia rotante". Failure may be d-
ue to r=0 included in transformed cylindrical coordinates of an i-
nterface with rotational relative motion. Another reason could b-
e that the interface contains faces that are parallel and others
that are perpendicular to the rotation axis.

I am understanding that maybe the problem is on the orthogonal surfaces, so I separated them and I tried to define 2 different groups of interfaces, but I get this one.

ERROR #001100279 has occurred in subroutine ErrAction.
Message:
Floating point exception: Zero divide

So I am thinking that maybe ANSYS solves the equations in cylindrical coordinates with the origin on the rotation axis , so when r->0, the solver is not capable to define the angle of the position, so trying to define different groups of interfaces does not change the result, but I am not sure that this is what is happening exactly.
I do not know if this is possible, but maybe there is a way to set the solver to use another frame of reference for the equations.

Anyway my question: is there a way to overcome this error?