4.2 - Turbulent flow in smooth pipes
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Practice Questions
Test your understanding with targeted questions
What flow regime is indicated by a Reynolds number above 4000?
💡 Hint: Think about the range provided for laminar and turbulent flow.
In turbulent flow, how does velocity behave close to the pipe wall?
💡 Hint: Consider the effect of viscosity and adhesion to the wall.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the threshold Reynolds number indicating turbulent flow?
💡 Hint: Recall the commonly accepted values for laminar versus turbulent transitions.
True or False: The velocity in a turbulent flow at the wall is always positive.
💡 Hint: Consider what happens at the boundary where the fluid meets the wall.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A cylindrical pipe of diameter 10 cm has turbulent flow with a velocity at 1 cm from the wall being 40% more than at 4 cm. Calculate the roughness height using Nikuradse's findings.
💡 Hint: Set up equations based on velocity differences at the specified distances.
Given a fluid with properties leading to a Reynolds number of 2500, convert the conditions to exhibit turbulent flow by altering the velocity or viscosity. What adjustments would lead to this change?
💡 Hint: Use the formula for Reynolds number: Re = (Density * Velocity * Diameter) / Viscosity.
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