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2 cards from this section. Quick, good the night before a test.
Define boundary layer.
Think about where friction affects fluid flow.
What does the Reynolds number indicate?
It's a dimensionless number related to flow characteristics.
What is the boundary layer thickness based on the Reynolds number?
Look at the influences of velocity and viscosity.
True or False: The Reynolds number can determine if the flow is laminar.
Recall the critical values for differentiation between flow types.
Calculate the boundary layer thickness for a flat surface in oil flowing at 5 m/s with a viscosity of 0.1 N.s/m² over a distance of 2m.
Be sure to gather the density values for oil to compute Re accurately.
Given a boundary layer thickness formula, derive the relationship of shear stress when factoring in turbulent flow.
Turbulence will introduce additional factors you need to account for.
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