In turbulent flow past a flat surface, the velocity u near the wall varies approximately logarithmically with distance y from the wall and also depends upon viscosity , density , and wall shear stress w For a certain airflow at 20C and 1 atm, w 0 8 Pa and u 15 m s at y 3 6 mm Use this information to estimate the velocity u at y 6 mm

Question: In turbulent flow past a flat surface, the velocity u near the wall varies approximately logarithmically with distance y from the wall and also depends

In turbulent flow past a flat surface, the velocity u near the wall varies approximately logarithmically with distance y from the wall and also depends upon viscosity μ, density ρ, and wall shear stress τw. For a certain airflow at 20°C and 1 atm, τw = 0.8 Pa and u = 15 m/s at y = 3.6 mm. Use this information to estimate the velocity u at y = 6 mm.

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