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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Non-Intersected faces found for matching interface periodic-walls › Reply To: Non-Intersected faces found for matching interface periodic-walls

November 19, 2024 at 3:21 pm
zoelle.wong
Subscriber

Hey ANSYS team,

I have a follow up question related to this problem set up. I ran my periodic BC case and compared the results to a 2D Axisymmetric and fully revolved case. The inlet/outlet/wall boundary conditions are the same for all 3 cases. My 2D Axisymmetric and fully revolved case approximately match in terms of flow field comparisons, but the periodic BC does not. 

I varied  equation of state, checked the peridodic conditions for my periodic boundary condition, but the periodic BC results did not change. My shadow/periodic faces match to be conformal 

I build my conformal, periodic BC with these inputs: origin [0,0,0], axis [1,0,0], auto offset

Sometimes the auto offset is computed as +/-90 deg

Is there something that I'm missing? I haven't had this issue before so I wasn't sure if its due to the internal structures inside my domain (see below). Thank you again so much for your patience!