Practice Indian Institute Of Technology Kharagpur (1.3) - Boundary Layer Theory (Contd.,)

Practice: Indian Institute of Technology Kharagpur

Lesson 1.3Boundary Layer Theory (Contd.,)

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9 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.
What is the definition of displacement thickness?
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Think about how the velocity changes at the surface.
Question 2.
Which type of flow has a smooth and orderly profile?
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Contrast with chaotic flow.
3Question 3.
What is the displacement thickness for laminar flow?
- 1/4 delta
- 3/8 delta
- 1/8 delta
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Think about the formula derived from the integration.
4Question 4.
True or False: The von Karman momentum integral equation applies only to turbulent flows.
- True
- False
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Recall the universal nature of the equation.
Question 5.
A flat plate in a fluid has a velocity profile given as u/U = y/delta. Calculate the displacement thickness and discuss its practical implications in design.
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Use the integration method for boundary layer analysis.
Question 6.
Given a turbulent boundary layer in an experiment, data shows a shear stress of 150 Pa and a free stream velocity of 10 m/s. Calculate the momentum thickness and discuss its engineering relevance.
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Apply the von Karman equation and relate known variables.

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