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3 cards from this section. Quick, good the night before a test.
Define shear stress in your own words.
Think of how fluids slide over surfaces.
What is the purpose of the Reynolds number?
Recall its significance in flow characterization.
What does the Reynolds number indicate in fluid flow?
Relate it back to flow characteristics.
True or False: Viscosity decreases with increasing temperature.
Think about how heat affects fluids.
A model yacht in a wind tunnel has a drag coefficient of 0.4, frontal area of 0.5 m², and experiences a wind speed of 15 m/s. Calculate the drag force. Consider air density as 1.225 kg/m³.
Use the drag force formula and substitute the values carefully.
For a sphere with a diameter of 0.5 m in a laminar flow at 1 m/s and a density of 900 kg/m³, calculate the Reynolds number given the dynamic viscosity of 0.001 Pa·s.
Ensure you've made a proper unit conversion to maintain consistency!
6 more questions in this section. Enroll free to practise them all.
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