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4 cards from this section. Quick, good the night before a test.
What is the significance of mass conservation in fluid flow?
Think about how water flows in a river.
Define displacement thickness.
Consider how a car affects the air around it.
What does mass conservation state in fluid dynamics?
Consider the principle of fluid flow in a pipe.
True or False: The wall shear stress is influenced by the thickness of the boundary layer.
Think about how thicker layers might change fluid interaction with the surface.
A flat plate in air flow shows a boundary layer of 1.5 mm at a velocity of 5 m/s. If the viscosity of air is 1.8 × 10^-5 Pa.s, calculate the shear stress at the wall.
Determine the gradient near the wall using velocities.
If a wind tunnel with a diameter of 30 cm is designed for laminar flow at a speed of 4 m/s, what will be the Reynolds number? Will the flow remain laminar or transition to turbulence?
Calculate using viscosity and density at the given temperature.
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