Practice Displacement Thickness And Momentum Thickness (13.2.2) - Boundary Layer Approximation III

Practice: Displacement Thickness and Momentum Thickness

Lesson 13.2.2Boundary Layer Approximation III

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8 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is displacement thickness?
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Think about how the flow is altered near surfaces.
Question 2.
Define momentum thickness.
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Consider how momentum changes as fluid flows along a surface.
3Question 3.
What is the definition of displacement thickness?
- A measure of effective flow area reduction
- The extent to which momentum is lost
- The thickness of the liquid at the surface
- None of the above
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Think about how displacement thickness affects the entire flow region.
4Question 4.
True or False: Momentum thickness can be computed from velocity profiles.
- True
- False
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Link this to how flows behave along surfaces.
Question 5.
Calculate the displacement thickness for a given laminar flow situation with known velocity distributions. If u = 0.6U at y = 0.005m, and U is the free stream velocity, what would B4* be?
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Focus on integrating within the range defined by your boundaries.
Question 6.
Given velocity profiles for a turbulent flow, derive the momentum thickness and discuss its implications on drag force design.
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Incorporate experimental or empirical data for accuracy.

4 more questions in this section. Enroll free to practise them all.