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2 cards from this section. Quick, good the night before a test.
What defines a boundary layer in fluid dynamics?
Think about where fluid velocity changes close to a wall.
What is the formula for calculating Reynolds number?
Recall the definition of Reynolds number involving flow and viscosity.
What is the definition of a boundary layer?
Focus on the effect of viscosity near solid surfaces.
True or False: The momentum thickness increases with higher free stream velocity.
Think about the relationship between velocity and momentum.
A flat plate is submerged in a fluid with viscosity 0.002 N·s/m² and is 1.5 meters long with water flowing at 1.5 m/s. Calculate both the boundary layer thickness and wall shear stress at the trailing edge.
Ensure to check the unit consistency while calculating.
For turbulent flow transitioning from laminar, explain and calculate how the boundary layer changes if the plate velocity increases from 0.2 m/s to 0.5 m/s.
Think about how increasing the velocity directly influences the boundary layer's behavior.
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