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

Practice: Indian Institute of Technology – Kharagpur

Lesson 1.3Boundary Layer Theory (Contd..)

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is a boundary layer?
Show hintHide hint
Think about fluid behavior near a surface.
Question 2.
What does the term 'momentum thickness' (θ) refer to?
Show hintHide hint
Consider the formula used for boundary layers.
3Question 3.
What is the main purpose of analyzing the boundary layer?
- To predict flow behavior
- To measure pressure
- To alter fluid density
Show hintHide hint
Think about why engineers study fluid dynamics.
4Question 4.
True or False: The momentum thickness is always greater than the boundary layer thickness.
- True
- False
Show hintHide hint
Consider the definitions to differentiate them.
Question 5.
For a flat plate in air with high viscosity, derive the shear stress and boundary layer thickness using Reynolds number relations. If U = 5 m/s, μ = 1.5 x 10^-3 Ns/m², what will δ be at x = 1.5m?
Show hintHide hint
Watch for units and conversions necessary between different formulas.
Question 6.
Select a real-world scenario where boundary layer control improves performance. Calculate potential drag reduction if theoretical shear stress expected is 0.2 N/m².
Show hintHide hint
Consider the application and A in the context of your scenario.

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