Practice Definition Of Displacement Thickness (2.1) - Boundary Layer Theory (Contd.,)

Practice: Definition of Displacement Thickness

Lesson 2.1Boundary Layer Theory (Contd.,)

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define displacement thickness in your own words.
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Think about how fluid flows and interacts with surfaces.
Question 2.
What happens to fluid speed near a wall?
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Consider the concept of drag and fluid layers.
3Question 3.
What is displacement thickness?
- The distance a streamline is pushed due to viscosity
- The total flow rate of a fluid
- The viscosity of fluid in the boundary layer
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Think about interactions between fluid and solid surfaces.
4Question 4.
True or False: The displacement thickness has no effect on fluid flow characteristics.
- True
- False
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Consider why engineers care about this measurement.
Question 5.
Derive the displacement thickness formula given a complex velocity profile of a laminar boundary layer. Assume u/U to be a function of y and delta.
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Use an integral approach similar to what we discussed with simpler profiles.
Question 6.
Evaluate how displacement thickness might change with varying fluid viscosity in an experiment.
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Relate this concept back to the definitions and effects of viscosity on flow.

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