Practice Boundary Layer Concept (6.1) - Dimensional Analysis & Boundary Layer Theory

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10 questions

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6 sample questions

Question 1.
What is a boundary layer?
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Think about fluid motion near walls.
Question 2.
Define laminar boundary layer.
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Contrast with turbulent flow.
3Question 3.
What occurs in a boundary layer?
- Fluid velocity is constant
- Fluid velocity changes from zero to free stream value
- Fluid is stagnant
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Remember how fluid behaves at surfaces.
4Question 4.
True or False: A laminar boundary layer experiences chaotic flow.
- True
- False
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Think about the definition of laminar flow.
Question 5.
Calculate the boundary layer thickness for a flat plate with a fluid flowing at a velocity of 5 m/s where the dynamic viscosity is 0.001 Pa.s.
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You need to determine kinematic viscosity first.
Question 6.
Discuss how engineers can minimize boundary layer separation in aerodynamic structures. Provide a detailed approach.
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Think about the shape of an airplane wing or race car.

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