11.1.2 - Wall Shear Stress Calculation
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Practice Questions
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What is wall shear stress?
💡 Hint: Consider the interaction between fluid and a stationary boundary.
Name one assumption when using Navier-Stokes equations.
💡 Hint: Think about conditions under which fluid flow is analyzed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does wall shear stress depend on?
💡 Hint: Think about how the fluid's flow characteristics affect stress.
True or False: Vorticity can be zero for all flow types.
💡 Hint: Recall the definition of vorticity in fluid mechanics.
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Challenge Problems
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Given a fluid with dynamic viscosity μ = 0.001 Pa·s flowing between two plates separated by 0.1 m, with a pressure gradient dp/dx = -50 Pa/m, determine the wall shear stress.
💡 Hint: Make sure to correctly apply the relationship between shear stress and viscosity with the velocity gradient.
Discuss how the average velocity changes in the transition from laminar to turbulent flow in a channel.
💡 Hint: Think about how eddies in turbulent flow impact the speed of fluid at different depths.
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