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Y plus wall distance estimation — CFD-Wiki, the free CFD reference

When meshing it is often useful to be able to estimate the wall-distance needed to obtain a certain Y+ value. To estimate this you can do the following: 1. Compute the Re number: 2. Estimate the skin friction using one of the formulas given here, for example, using the Schlichting skin-friction correlation: 3. Compute the Wall shear stress: