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What is the range of y+ in the buffer layer?

What is the range of y+ in the buffer layer? Correct Answer 5 < y+ < 30

Buffer layer has the turbulent forces and the viscous forces in equal magnitude. In this layer, the range of y+ is 5 < y+<30. 0 < y+ < 5 is for the linear or viscous sub-layer. The buffer layer lies just above the viscous sub-layer.

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