Ansys Learning Forum Forums Discuss Simulation Fluids Warning about rpvar ‘wall/vnormal-tolerance’ Reply To: Warning about rpvar ‘wall/vnormal-tolerance’

Sunil Lilhare
Ansys Employee

Yes, previously described steps are for rotating cell zones. In your case, the warning you're encountering indicates that the wall motion in your simulation has a significant component normal to the surface of the faces in face zone. This could be due to the setup of the rotating wall boundary conditions, where the specified motion does not align well with the actual face orientations. To resolve this, you should check the boundary conditions for the rotating walls to ensure they are defined correctly and align with the intended physical setup. Adjusting the 'wall/vnormal-tolerance' rpvar value may also help, but it's crucial to ensure that the physical model is correct first.

Please check the link below and refer to section 7.4.15.4 to know more about rotating wall boundary condition.

7.4. Boundary Conditions (ansys.com)