Periodic boundary condition: Pressure increase instead of drop along the flow?
I have been trying to simulate a model using Periodic Boundary Conditions. Since the dimples are distributed equally over the surface, I have chosen I small length to run the CFD simulation.
The problem is, the pressure at the outlet is higher than the inlet. It only happens when I use the Periodic Boundary Condition.
Does anyone have an idea what could be wrong with my model?
Thank you in advance.