13.6.2 - Apparent Wall Concept
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Practice Questions
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What is the definition of displacement thickness?
💡 Hint: Think about how a boundary layer affects streamlines.
How does momentum thickness differ from displacement thickness?
💡 Hint: Consider what each thickness represents in terms of flow characteristics.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does displacement thickness quantify in fluid flow?
💡 Hint: Consider what happens at surfaces where fluids interact.
True or False: Momentum thickness and displacement thickness are similar in their definitions.
💡 Hint: Think of what each thickness represents.
1 more question available
Challenge Problems
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A fluid flows over a plate with a known displacement thickness of 3 mm. If the free stream velocity is 10 m/s, calculate the mass flow rate reduction due to this thickness over a 1 m section of the plate.
💡 Hint: Think about applying the continuity equation with adjustments based on displacement.
In a turbulent flow scenario, the momentum thickness is determined to be 2 cm. If the total drag experienced by a surface area of 0.5 m² is 30 N, estimate the friction coefficient based on the momentum thickness.
💡 Hint: Investigate standard drag equations like F = C * A * ρ * V².
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