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3 cards from this section. Quick, good the night before a test.
Define average velocity in fluid dynamics.
Think about how flow quantities are averaged.
What is wall shear stress?
Relate it to the velocity gradient at the wall.
What is the relationship between average velocity and wall shear stress?
Consider how stress interactions might alter flow.
True or False: Vorticity is a measure of fluid's linear motion.
Think about the concept of rotation vs. linear motion.
Given a velocity field: u = 5 - (y²/4), where y is the distance from the wall, compute the average velocity across the area from -2 to 2.
Sketch the area being integrated and identify limits.
If the wall shear stress is given as 0.2 N/m², and dynamic viscosity is 0.3 Pa·s, what is the velocity gradient at the wall?
Understand how stress and viscosity relate to gradients.
4 more questions in this section. Enroll free to practise them all.
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