2.1 - Problem 7: Shear Stress Determination
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Practice Questions
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What is shear stress?
💡 Hint: Think about forces acting on flat surfaces.
Convert 10 cm to meters.
💡 Hint: Remember 1 cm = 0.01 meters.
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Interactive Quizzes
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What is shear stress at the wall denoted as?
💡 Hint: It’s a constant in turbulent flow equations.
True or False: Laminar flow has a constant cross-sectional area.
💡 Hint: Consider the profile shape when answering.
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Challenge Problems
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A pipe with an average height of irregularities is 0.15 mm. If the wall shear stress is 4.9 N/m² and viscosity is 0.01 Stokes, describe the boundary type.
💡 Hint: Calculate Re* using u*k/ν.
Given shear stress values and velocity profiles, create an analysis discussing how you would calculate τ₀ for a non-circular pipe flow system.
💡 Hint: Remember to adjust for geometric factors in your calculations.
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