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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › VOF Free Surface Deformation › Reply To: VOF Free Surface Deformation

May 31, 2024 at 2:07 pm
MD
Subscriber
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?