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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define wall shear stress.
💡 Hint: Think about the relationship with viscosity.
Question 2
Easy
What is Reynolds number?
💡 Hint: Consider the ratio of inertia to viscous forces.
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 is the primary factor used to predict if a flow is laminar or turbulent?
- Viscosity
- Reynolds number
- Pressure
💡 Hint: Think about what defines flow characteristics in fluid dynamics.
Question 2
True or False: Stream functions can exist only in the presence of irrotational flow.
- True
- False
💡 Hint: Consider the flexibility of stream functions in flow analysis.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A fluid with a viscosity of 0.89 Pa·s flows through a circular pipe of diameter 0.1 m. Calculate the wall shear stress if the average velocity is 2 m/s.
💡 Hint: Use the average velocity and divide by the distance to calculate the velocity gradient.
Question 2
Analyze the effect of increasing the Reynolds number from 1,000 to 10,000 on the boundary layer thickness for a flat plate in a steady flow.
💡 Hint: Consider the governing relation between Reynolds number and boundary layer characteristics.
Challenge and get performance evaluation