Practice Displacement Thickness and Momentum Thickness - 13.2.2 | 13. Boundary Layer Approximation III | Fluid Mechanics - Vol 3
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Displacement Thickness and Momentum Thickness

13.2.2 - Displacement Thickness and Momentum Thickness

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is displacement thickness?

💡 Hint: Think about how the flow is altered near surfaces.

Question 2 Easy

Define momentum thickness.

💡 Hint: Consider how momentum changes as fluid flows along a surface.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

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

💡 Hint: Think about how displacement thickness affects the entire flow region.

Question 2

True or False: Momentum thickness can be computed from velocity profiles.

True
False

💡 Hint: Link this to how flows behave along surfaces.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

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?

💡 Hint: Focus on integrating within the range defined by your boundaries.

Challenge 2 Hard

Given velocity profiles for a turbulent flow, derive the momentum thickness and discuss its implications on drag force design.

💡 Hint: Incorporate experimental or empirical data for accuracy.

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