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3 cards from this section. Quick, good the night before a test.
What is the formula for the velocity profile in a laminar flow?
Look for the equation provided in the section.
What do we calculate to find the wall shear stress?
Consider how shear stress is related to velocity gradient.
What is the boundary layer thickness for a given fluid?
Think about where viscosity affects fluid motion.
True or False: The drag force is always equal to the weight of the object in the fluid.
Consider what affects drag beyond just weight.
A flat plate with length 2 meters is immersed in water flowing at 0.2 m/s with viscosity 0.001 Pa·s. Calculate the boundary layer thickness at the end of the plate.
Remember to convert all units to SI.
Determine the drag force acting on the plate using the wall shear stress you derived.
Use the relationship for drag derived earlier in class.
6 more questions in this section. Enroll free to practise them all.
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