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Mesh Non-Orthogonality Issue in AutoGrid5

sima101f

Dear Numeca Team,

I am using AutoGrid5 for my turbomachinery simulations in OpenFOAM, but I’m struggling to achieve a sufficiently good mesh due to high non-orthogonality.

I’ve enabled the expert controls and set the skewness control and gap skewness control to "medium." While the mesh metrics meet Numeca standards, the exported mesh consistently shows very high non-orthogonality near the leading edge across the span during the mesh check (see attached picture).

Could you advise on what might be causing this issue? Despite trying various adjustments, some cells remain problematic, leading to simulation crashes.

Thank you for your help.

Best regards,

Sid

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