17.6.2 - Coefficient of Drag (CD)
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Practice Questions
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Define the coefficient of drag (CD).
💡 Hint: Think about the dimensionality and significance of the term.
What is the primary purpose of minimizing drag in engineering?
💡 Hint: Consider the effect on energy consumption and speed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the coefficient of drag (CD) quantify?
💡 Hint: Recall the context in which CD is used.
True or False: A streamlined object has a higher CD compared to a blunt object.
💡 Hint: Think about how air flows around objects.
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Challenge Problems
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Evaluate the impact of different shapes on the drag coefficient of a sphere versus a cube when both are in the same fluid flow.
💡 Hint: Consider how each shape interacts with fluid flow.
Calculate the expected drag force on a wind turbine blade with a frontal area of 5 m² at a wind speed of 15 m/s and a CD of 0.4.
💡 Hint: Make sure to apply the correct values into the drag formula.
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