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Problem with DES Model of Airfoil in Ground Effect

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Old   August 18, 2020, 04:50
Default Problem with DES Model of Airfoil in Ground Effect
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Daniel
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Hi all,

I have plotted the turbulent viscosity ratio for a DES of an airfoil in ground effect and have noticed a worrying feature I cannot figure out. The figure attached shows that the regions far from the wall have a higher level of turbulence, before becoming more laminar in the region closer to the airfoil. This is confusing, as I set a very low level or turbulent intensity at the inlet (0.7%). May it be due to poor aspect ratio as the mesh changes near the airfoil? Any help is much appreciated.
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File Type: png DES_turbviscratio_error_0.6AOA8.PNG (188.1 KB, 4 views)
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airfoil, des, fluent, mesh, turbulent viscosity ratio

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