[abhi.jam22]

Hey Guys,

I am performing 3D wing simulations using a hybrid mesh with a hexahedral near-field region (y-plus 3) to capture the boundary layer and an unstructured tetrahedral mesh beyond that. The pictures attached are for a NACA 4415 profile aspect ratio 12 wing for a Re 3 million AoA 10 deg. I generate two different mesh files for the two different regions in ICEM and then combine them in FLUENT defining the interface as Matching interface. The contours for velocity magnitude and static pressure seem to be fine but when I plot vorticity magnitude I see some spurious regions where vorticity is not expected. Can anyone explain the reason behind this. The odd region is at the interface of the two meshes.

Any insight to mitigate the problem is appreciated.

Regards