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3 cards from this section. Quick, good the night before a test.
What does the mass conservation equation represent in fluid dynamics?
Think about how mass enters and exits a system.
Define displacement thickness.
Consider how boundary layers affect the streamline.
What is the primary purpose of the boundary layer concept?
Think about how engineers assess fluid behavior around structures.
True or False: The momentum thickness reduces momentum flux in a boundary layer.
Recall the definition of momentum thickness.
Given a flat plate of length 1m in air flowing at a free stream velocity of 25 m/s, calculate the boundary layer thickness if it is laminar. Assume the kinematic viscosity of air as 1.5 x 10^-5 m²/s.
Start by calculating the Reynolds number first.
In a wind tunnel experiment, a flat plate has a boundary layer formed at its leading edge. Can you derive the shear stress acting on the plate if the velocity gradient at the wall is 2 s^-1 and the dynamic viscosity is 0.001 Pa.s?
Use the shear stress equation from fluid dynamics.
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