Reply To: VOF Free Surface Deformation

[Mehmet D.]

I managed to deform the free surface, but I encountered an error: 'Reversed flow on 1035 faces of pressure-outlet 8.' The Pressure Outlet-8 is the upper boundary condition. The maximum aspect ratio is around 600, and the maximum skewness is approximately 0.55. When I examine the velocity contour, I don't observe any reverse flow, as I expect to see a region with reduced velocity. I also plotted the streamlines but couldn't identify any issues.

 

I am using the Volume of Fluid (VOF) method with the 'Open Channel Flow' model. Additionally, I have updated my Fluent version to Fluent 2023R1.

 

How can I resolve this problem?