Practice Definition of Displacement Thickness - 2.1 | 3. Boundary Layer Theory (Contd.,) | Hydraulic Engineering - Vol 2
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Definition of Displacement Thickness

2.1 - Definition of Displacement Thickness

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define displacement thickness in your own words.

💡 Hint: Think about how fluid flows and interacts with surfaces.

Question 2 Easy

What happens to fluid speed near a wall?

💡 Hint: Consider the concept of drag and fluid layers.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

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

💡 Hint: Think about interactions between fluid and solid surfaces.

Question 2

True or False: The displacement thickness has no effect on fluid flow characteristics.

True
False

💡 Hint: Consider why engineers care about this measurement.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

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.

💡 Hint: Use an integral approach similar to what we discussed with simpler profiles.

Challenge 2 Hard

Evaluate how displacement thickness might change with varying fluid viscosity in an experiment.

💡 Hint: Relate this concept back to the definitions and effects of viscosity on flow.

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Reference links

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