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Proper Mesh for NACA 0012 Validation

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Old   March 18, 2019, 01:17
Smile Proper Mesh for NACA 0012 Validation
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Anthony Tang
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Hi guys,

I'm trying to validate a NACA 0012 for a research project but I cannot seem to get the small wall layer height for an appropriate y+ value. I followed this guide https://confluence.cornell.edu/displ...Airfoil+-+Mesh and it creates a good enough mesh for invisid flow but not Spallart-Allmarus turbulent. I know the first height cannot be above a y + value of 1 so for my chord length 1 airfoil I need a first height of around .2mm but I cannot seem to get that height below 2mm. Since I'm using a face meshing I cannot use an inflation and can't seem to get the first layer height smaller. Does anyone know how to make the first height layer smaller / create an inflation in addition to using the face mesh?




CFD online has example mesh with the inflation-like layer but I don't know how it got that. The example can be found here: https://www.cfd-online.com/Wiki/NACA0012_airfoil





Images of the mesh as of now with parameters : https://imgur.com/a/SF5uHzn
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ansys, fluent, mesh, naca 0012, workbench ansys 18

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