17.4 - Velocity Components in Turbulent Flows
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Practice Questions
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What is the definition of laminar flow?
💡 Hint: Think about how a calm river flows.
Define Reynolds number.
💡 Hint: What does it measure regarding flow patterns?
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Interactive Quizzes
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What characterizes turbulent flow?
💡 Hint: Think of a turbulent river vs. a calm stream.
True or False: Reynolds numbers below 2300 indicate turbulent flow.
💡 Hint: What happens to flow at different Reynolds numbers?
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Challenge Problems
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An engineer is designing a pipeline where water flows with a maximum velocity of 3 m/s. Calculate the Reynolds number, given the diameter is 0.2 m and dynamic viscosity is 0.001 Pa.s. Discuss if the flow will be laminar or turbulent.
💡 Hint: Use the formula for Reynolds number, adjusting values as necessary.
Given the fluctuating velocity components in a turbulent flow as u'=0.5 m/s for the x-direction. If the density of the fluid is 1000 kg/m³, calculate the mass flux due to these fluctuations. Explain its importance in mass transport.
💡 Hint: Consider both mass and momentum interactions in turbulent flow.
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