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The value of y^+ at the intersection between the linear profile and log-law is ___________

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in Computational Fluid Dynamics by (118k points)
The value of y^+ at the intersection between the linear profile and log-law is ___________

(a) 20

(b) 5

(c) 30

(d) 11.63

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Best answer
Right option is (d) 11.63

Explanation: Though the layer varies from viscous sub-layer to buffer layer when y^+ crosses the value 5, the variation is still linear. This linear variation becomes logarithmic variation when y^+ crosses 11.63 to be exact.

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