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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the significance of mass conservation in fluid flow?
💡 Hint: Think about how water flows in a river.
Question 2
Easy
Define displacement thickness.
💡 Hint: Consider how a car affects the air around it.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does mass conservation state in fluid dynamics?
- Mass can be created
- Mass can be destroyed
- Mass must remain constant
💡 Hint: Consider the principle of fluid flow in a pipe.
Question 2
True or False: The wall shear stress is influenced by the thickness of the boundary layer.
- True
- False
💡 Hint: Think about how thicker layers might change fluid interaction with the surface.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A flat plate in air flow shows a boundary layer of 1.5 mm at a velocity of 5 m/s. If the viscosity of air is 1.8 × 10^-5 Pa.s, calculate the shear stress at the wall.
💡 Hint: Determine the gradient near the wall using velocities.
Question 2
If a wind tunnel with a diameter of 30 cm is designed for laminar flow at a speed of 4 m/s, what will be the Reynolds number? Will the flow remain laminar or transition to turbulence?
💡 Hint: Calculate using viscosity and density at the given temperature.
Challenge and get performance evaluation