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3 cards from this section. Quick, good the night before a test.
Define dynamic viscosity.
Think about how fluids react under stress.
What units are used to express kinematic viscosity?
Consider how we relate dynamic viscosity and density.
What is dynamic viscosity?
Think about how a thick syrup flows compared to water.
True or False: Kinematic viscosity is defined as the ratio of dynamic viscosity to fluid density.
Recall the relationship between these two viscosities.
You have a fluid flowing over a surface with an observed dynamic viscosity of 1.5 Pa.s and a flow velocity of 3 m/s. If the fluid has a density of 950 kg/m³, calculate the shear stress present.
Think about how shear stress is derived from viscosity and flow velocity.
A thin layer of oil overlays water. The oil has a viscosity of 8.0 poise at 25°C. If the water is moving beneath it at 1 m/s, calculate the kinematic viscosity of the oil in m²/s.
Always convert units to standard SI before calculations.
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