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2 cards from this section. Quick, good the night before a test.
What is the Froude number a ratio of?
Remember what dominates in scenarios involving gravity.
Define dynamic similarity.
Think about the conditions necessary for accurate model testing.
What must be equal for both a model and prototype if gravity is the dominant force?
Think about which forces dominate in a gravity-driven flow.
True or False: The Reynolds number is used to compare the effects of viscous forces in fluid flow.
Focus on the forces involved in fluid mechanics.
A hydraulic engineer is designing a model of a new bridge over a river. If the prototype's Froude number is 4 and the model must match it while simulating conditions in a lab, how should the engineer scale the model length to achieve this?
Reflect on the mathematical relationships between Froude numbers and dimensions.
Given a prototype with kinematic viscosity of 0.001 m²/s and density of 1000 kg/m³, what is the necessary kinematic viscosity for a model that has a different density of 800 kg/m³ to maintain a similarity in scale?
Keep in mind how viscosity ratios and densities interact in flow.
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