Practice Boundary Layer Theory (contd.,) (1.5) - Boundary Layer Theory (Contd.,)

Practice: Boundary Layer Theory (Contd.,)

Lesson 1.5Boundary Layer Theory (Contd.,)

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8 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the formula for displacement thickness in laminar flow?
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Remember to integrate the expression for the velocity profile.
Question 2.
Define turbulent flow in your own words.
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Think about the differences from laminar flow.
3Question 3.
What is the displacement thickness for laminar flow derived from the velocity profile?
- A) 7/8 δ
- B) 3/8 δ
- C) δ
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Recall the integration limits and the profile used.
4Question 4.
True or False: The von Karman momentum integral equation only applies to turbulent flows.
- True
- False
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Consider its versatility in flow analysis.
Question 5.
A flat plate has a turbulent boundary layer with a known momentum thickness θ = 0.02m. If the free stream velocity U is 15 m/s, calculate the shear stress τw if the density ρ of water is 1000 kg/m^3.
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Don't forget to convert units where necessary.
Question 6.
Explain how the von Karman momentum integral equation could be applied to calculate drag forces on a ship moving through water, taking into consideration both laminar and turbulent zones.
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Think about real-life applications in naval architecture.

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