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4 cards from this section. Quick, good the night before a test.
What is a boundary layer?
Think about flow near any surface, like a wall.
Define Reynolds number.
It's related to the smoothness or turbulence of flow.
What defines the boundary layer?
Consider what happens near surfaces when fluid flows.
True or False: Turbulent flow can occur when the Reynolds number is less than 10^5.
Think about the definitions of laminar vs. turbulent flow.
Calculate the Reynolds number for a flow with a characteristic length of 0.5 meters, a fluid velocity of 2 m/s, and a kinematic viscosity of 0.001 m²/s.
Use the formula for Reynolds number: Re = (L * V) / ν.
Explain how boundary layer thickness would change with increasing flow velocity over a flat plate. Describe the physical implications of this change.
Consider the balance between inertial effects and viscous drag as velocity changes.
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