22.2.2 - Wall Shear Stress Computation
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Practice Questions
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What is Wall Shear Stress?
💡 Hint: Think about the force exerted by fluid against pipe walls.
Define Hydraulic Diameter.
💡 Hint: Consider the two key components: area and wetted perimeter.
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Interactive Quizzes
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What is the function of wall shear stress?
💡 Hint: Think about the interaction between fluid and surfaces.
The Moody chart is used to find what?
💡 Hint: Consider its application to flow regimes.
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Challenge Problems
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A rectangular channel with a width of 4m and depth of 3m is in use. Calculate the hydraulic diameter and the expected wall shear stress if the flow exhibits turbulent characteristics with a Reynolds number of 15,000.
💡 Hint: Ensure to consider how turbulent flow affects shear stress predictions.
A pipe with a diameter of 0.1m has a flow rate of 0.01m³/s. Calculate the wall shear stress if the viscosity of the fluid is 1cP and the Reynolds number indicates turbulent flow.
💡 Hint: Pay attention to the flow regime to select the correct friction factor.
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