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3 cards from this section. Quick, good the night before a test.
Define boundary layer thickness.
Think about the fluid dynamics close to surfaces.
What is shear stress?
Remember how fluids act at rest interfaces.
What is the primary focus of boundary layer theory?
Think about what factors influence drag and flow stability.
Shear stress is calculated using which fundamental law?
What do you know about how stress is distributed in stationary layers?
A plate is 2 meters long, and water flows at 200 mm/s. Calculate the boundary layer thickness at the plate's end. Use viscosity = 0.001 N·s/m².
Ensure unit consistency for your calculations.
Determine the drag force for a plate with a length of 2 m in the same conditions as before. Use your result for shear stress and integrate.
Don’t forget to account for the entire area!
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