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2 cards from this section. Quick, good the night before a test.
What is the definition of boundary layer?
Think about how fluid moves next to a surface.
State the formula for momentum thickness.
Recall how we integrate velocity profiles.
What is the expression for momentum thickness in laminar flow?
Consider the integral definition.
True or False: The wall shear stress is independent of the Reynolds number.
Remember the role of viscous forces.
A fluid flows over a flat plate with data given: U = 2 m/s, μ = 0.001 Pa.s. Calculate the boundary layer thickness at a distance of 1 m.
Start with defining Reynolds number first.
Given the velocity profile u/U = 3/2 (y/δ) - 1/2 (y/δ)³, determine the wall shear stress at y = 0.
Use the velocity profile to define du/dy.
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