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y-plus and meshes

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Old   March 16, 2006, 17:04
Default y-plus and meshes
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Ben Cho
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Hi, I'm new to CFD and I was wondering if I could ask a question. I'm trying to model a wing within a wind-tunnel using Fluent 6.1.22 using the SST k-omega tuburlence model for a low-Re problem (around 1E5). I've resolved the boundary layer such that when I plot my y-plus values, they are all under 1.2. However, many of the points on the plot also show y-plus << 1. From the FLUENT documentation I've read, it suggests y-plus values around 1, but at least less than 4 or 5.

My question is should I be worried that I have such low y-plus values, especially later when I'll get separated flow, or am I fine as long as my y-plus values are less than 1?
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