1. The flow over a leaf is being studied in a wind tunnel. If the wind blows at 8 mph, and the leaf is aligned with the flow, is the boundary layer laminar or turbulent? 2. For steady, fully developed flow of a constant property fluid in a two-dimensional, rectangular duct of height 2h the velocity profile is parabolic. Find the ratio of the displacement thickness δ∗ to the half-height h (assume you can put the freestream velocity equal to the maximum velocity, and h equal to the boundary layer thickness).
1. The flow over a leaf is being studied in a wind tunnel. If the wind blows at 8 mph, and the leaf is aligned with the flow, is the boundary layer laminar or turbulent?
2. For steady, fully developed flow of a constant property fluid in a two-dimensional, rectangular duct of height 2h the velocity profile is parabolic. Find the ratio of the displacement thickness δ∗ to the half-height h (assume you can put the freestream velocity equal to the maximum velocity, and h equal to the boundary layer thickness).
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1. Compute the Reynolds number.
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